Difference between revisions of "Unit Crypto"

Latest revision as of 04:40, 31 August 2021

`CRYPTO_CIPHER_MODE_ECB = 0;`	Electronic Codebook
`CRYPTO_CIPHER_MODE_CBC = 1;`	Cipher Block Chaining
`CRYPTO_CIPHER_MODE_CFB = 2;`	Cipher Feedback
`CRYPTO_CIPHER_MODE_OFB = 3;`	Output Feedback
`CRYPTO_CIPHER_MODE_CTR = 4;`	Counter
`CRYPTO_CIPHER_MODE_CCM = 5;`	Counter with CBC-MAC
`CRYPTO_CIPHER_MODE_GCM = 5;`	Galois/Counter Mode

Hash algorithms CRYPTO_HASH_ALG_*

`CRYPTO_HASH_ALG_NONE = 0;`
`CRYPTO_HASH_ALG_MD5 = 1;`
`CRYPTO_HASH_ALG_SHA1 = 2;`
`CRYPTO_HASH_ALG_SHA256 = 3;`
`CRYPTO_HASH_ALG_HMAC_MD5 = 4;`
`CRYPTO_HASH_ALG_HMAC_SHA1 = 5;`
`CRYPTO_HASH_ALG_HMAC_SHA256 = 6;`
`CRYPTO_HASH_ALG_SHA384 = 7;`
`CRYPTO_HASH_ALG_SHA512 = 8;`
`CRYPTO_HASH_ALG_HMAC_SHA384 = 9;`
`CRYPTO_HASH_ALG_HMAC_SHA512 = 10;`
`CRYPTO_HASH_ALG_SHA224 = 11;`
`CRYPTO_HASH_ALG_HMAC_SHA224 = 12;`

MD5 digest size MD5_DIGEST_*

`MD5_DIGEST_SIZE = 16;`

AES block size AES_BLOCK_*

`AES_BLOCK_SIZE = 16;`	128 bit blocks

AES key size AES_KEY_*

`AES_KEY_SIZE128 = 16;`	128 bit keys
`AES_KEY_SIZE192 = 24;`	192 bit keys
`AES_KEY_SIZE256 = 32;`	256 bit keys

`AES_IV_SIZE = 16;`	128 bit initialization vector

DES block size DES_BLOCK_*

`DES_BLOCK_SIZE = 8;`	64 bit blocks

DES key size DES_KEY_*

`DES_KEY_SIZE = 8;`	64 bit keys

DES key type DES_KEYTYPE_*

`DES_KEYTYPE_ENCRYPT = 0;`
`DES_KEYTYPE_DECRYPT = 1;`

`DES_BYTEBIT:array[0..7] of LongWord = (`
`$80, $40, $20, $10, $08, $04, $02, $01);`

3DES block size DES3_BLOCK_*

`DES3_BLOCK_SIZE = 8;`	64 bit blocks

3DES key size DES3_KEY_*

`DES3_KEY_SIZE = 24;`	192 bit (3 x 64 bit) keys

SHA1 constants SHA1_*

`SHA1_DIGEST_SIZE = 20;`

`SHA1_K20 = $5A827999;`
`SHA1_K40 = $6ED9EBA1;`
`SHA1_K60 = $8F1BBCDC;`
`SHA1_K80 = $CA62C1D6;`

SHA256 constants SHA256_*

`SHA256_DIGEST_SIZE = 32;`

SHA384 constants SHA384_*

`SHA384_DIGEST_SIZE = 48;`

SHA512 constants SHA512_*

`SHA512_DIGEST_SIZE = 64;`

RSA constants RSA_*

`RSA_MODULUS_BYTES_MAX = 512;`	4096 bit maximum

Base64 constants BASE64_*

`Base64EncodeTable:String = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';`

Type definitions

MD5 digest

PMD5Digest = ^TMD5Digest;

TMD5Digest = array[0..15] of Byte;

MD5 block

PMD5Block = ^TMD5Block;

TMD5Block = record

`Data:Pointer;`
`Size:LongWord;`
`Next:PMD5Block;`

MD5 context

PMD5Context = ^TMD5Context;

TMD5Context = record

`Data:array[0..63] of Byte;`
`Buffer:array[0..3] of LongWord;`
`Count:QWord;`

MD5 byte buffer

PMD5ByteBuffer = ^TMD5ByteBuffer;

TMD5ByteBuffer = array[0..63] of Byte;

MD5 long buffer

PMD5LongBuffer = ^TMD5LongBuffer;

TMD5LongBuffer = array[0..15] of LongWord;

AES key

PAESKey = ^TAESKey;

TAESKey = record

`Rounds:LongWord;`
`EncryptKey:array[0..59] of LongWord;`
`DecryptKey:array[0..59] of LongWord;`

AES context

PAESContext = ^TAESContext;

TAESContext = record

`AESKey:TAESKey;`
`CBC:array[0..AES_BLOCK_SIZE - 1] of Byte;`
`CTR:array[0..AES_BLOCK_SIZE - 1] of Byte;`

DES key

PDESKey = ^TDESKey;

TDESKey = array[0..31] of LongWord;

DES context

PDESContext = ^TDESContext;

TDESContext = record

`EncryptKey:TDESKey;`
`DecryptKey:TDESKey;`
`CBC:array[0..DES_BLOCK_SIZE - 1] of Byte;`

3DES key

PDES3Key = ^TDES3Key;

TDES3Key = record

`EncryptKey:array[0..2] of TDESKey;`
`DecryptKey:array[0..2] of TDESKey;`

3DES context

PDES3Context = ^TDES3Context;

TDES3Context = record

`DES3Key:TDES3Key;`
`CBC:array[0..DES3_BLOCK_SIZE - 1] of Byte;`

RC4 state

PRC4State = ^TRC4State;

TRC4State = array[0..255] of Byte;

RC4 context

PRC4Context = ^TRC4Context;

TRC4Context = record

`Key:array[0..31] of Byte;`
`KeySize:LongWord;`
`Start:LongWord;`

SHA1 digest

PSHA1Digest = ^TSHA1Digest;

TSHA1Digest = array[0..19] of Byte;

SHA1 block

PSHA1Block = ^TSHA1Block;

TSHA1Block = record

`Data:Pointer;`
`Size:LongWord;`
`Next:PSHA1Block;`

SHA1 context

PSHA1Context = ^TSHA1Context;

TSHA1Context = record

`Data:array[0..63] of Byte;`
`State:array[0..4] of LongWord;`
`Count:QWord;`

SHA1 byte buffer

PSHA1ByteBuffer = ^TSHA1ByteBuffer;

TSHA1ByteBuffer = array[0..63] of Byte;

SHA1 long buffer

PSHA1LongBuffer = ^TSHA1LongBuffer;

TSHA1LongBuffer = array[0..15] of LongWord;

SHA256 digest

PSHA256Digest = ^TSHA256Digest;

TSHA256Digest = array[0..31] of Byte;

SHA256 block

PSHA256Block = ^TSHA256Block;

TSHA256Block = record

`Data:Pointer;`
`Size:LongWord;`
`Next:PSHA256Block;`

SHA256 context

PSHA256Context = ^TSHA256Context;

TSHA256Context = record

`Data:array[0..63] of Byte;`
`State:array[0..7] of LongWord;`
`Count:QWord;`

SHA256 byte buffer

PSHA256ByteBuffer = ^TSHA256ByteBuffer;

TSHA256ByteBuffer = array[0..63] of Byte;

SHA256 long buffer

PSHA256LongBuffer = ^TSHA256LongBuffer;

TSHA256LongBuffer = array[0..15] of LongWord;

SHA256 algorithm

PSHA256_W = ^TSHA256_W;

TSHA256_W = array[0..63] of LongWord;

Note: This is the W array for the SHA256 algorithm

SHA512 digest

PSHA512Digest = ^TSHA512Digest;

TSHA512Digest = array[0..63] of Byte;

SHA512 block

PSHA512Block = ^TSHA512Block;

TSHA512Block = record

`Data:Pointer;`
`Size:LongWord;`
`Next:PSHA512Block;`

SHA512 context

PSHA512Context = ^TSHA512Context;

TSHA512Context = record

`Data:array[0..127] of Byte;`
`State:array[0..7] of QWord;`
`Count:QWord;`

SHA512 byte buffer

PSHA512ByteBuffer = ^TSHA512ByteBuffer;

TSHA512ByteBuffer = array[0..127] of Byte;

SHA512 algorithm

PSHA512_W = ^TSHA512_W;

TSHA512_W = array[0..79] of QWord;

Note: This is the W array for the SHA512 algorithm

SHA384 digest

PSHA384Digest = ^TSHA384Digest;

TSHA384Digest = array[0..47] of Byte;

SHA384 block

PSHA384Block = PSHA512Block;

TSHA384Block = TSHA512Block;

SHA384 context

PSHA384Context = PSHA512Context;

TSHA384Context = TSHA512Context;

SHA384 byte buffer

PSHA384ByteBuffer = PSHA512ByteBuffer;

TSHA384ByteBuffer = TSHA512ByteBuffer;

RSA context

PRSAContext = ^TRSAContext;

TRSAContext = record

`M:PBigInt;`	Modulus
`E:PBigInt;`	Public exponent
`D:PBigInt;`	Private exponent
`P:PBigInt;`	p in m = pq
`Q:PBigInt;`	q in m = pq
`DP:PBigInt;`	d mod (p-1)
`DQ:PBigInt;`	d mod (q-1)
`QInv:PBigInt;`	q^-1 mod p
`ModulusLen:Integer;`
`Context:PBigIntContext;`

Get random bytes

`TGetRandomBytes = function(Buffer:PByte; Count:Integer):Boolean;`

Base64 decode table

`TBase64DecodeTable = array[0..255] of Char;`

Hash context

PHashContext = ^THashContext;

THashContext = record

`Algorithm:LongWord;`
`Key:array[0..127] of Byte;`
`KeySize:LongWord;`
`case Integer of`
`0:(MD5:TMD5Context);`
`1:(SHA1:TSHA1Context);`
`2:(SHA256:TSHA256Context);`
`3:(SHA384:TSHA384Context);`
`4:(SHA512:TSHA512Context);`

Cipher context

PCipherContext = ^TCipherContext;

TCipherContext = record

`Algorithm:LongWord;`
`Mode:LongWord;`
`case Integer of`
`0:(RC4:TRC4Context);`
`1:(DES:TDESContext);`
`2:(DES3:TDES3Context);`
`3:(AES:TAESContext);`

Public variables

Crypto specific variables

`CryptoGetRandomBytesHandler:TGetRandomBytes;`

Function declarations

Initialization functions

procedure CryptoInit;

Description: To be documented

Note	None documented

Crypto functions

function HashCreate(Algorithm:LongWord; Key:Pointer; KeySize:LongWord):PHashContext;

Description: Initialize a hash context based on an algorithm and (if applicable) a key

Note	None documented

function HashDestroy(Context:PHashContext):Boolean;

Description: Free a hash context allocated by HashCreate

Note	None documented

function HashReset(Context:PHashContext):Boolean;

Description: Clear and reinitialize an existing hash context using the existing algorithm and key

Note	None documented

function HashReset(Context:PHashContext; Algorithm:LongWord; Key:Pointer; KeySize:LongWord):Boolean;

Description: Clear and reinitialize an existing hash context using a new algorithm and key

Note	None documented

function HashUpdate(Context:PHashContext; Data:Pointer; Size:LongWord):Boolean;

Description: Add a block of data to a hash context

Note	None documented

function HashFinish(Context:PHashContext; Digest:Pointer; Size:LongWord):Boolean;

Description: Finalize a hash context and return the digest (Hash) value

Note	None documented

function CipherCreate(Algorithm:LongWord; Vector,Key:Pointer; KeySize:LongWord):PCipherContext;

Description: Initialize a cipher context based on an algorithm and a key

Note	For block ciphers an initialization vector can be passed to enable CBC mode

function CipherCreate(Algorithm,Mode:LongWord; Nonce,Vector,Key:Pointer; VectorSize,KeySize:LongWord):PCipherContext;

Description: Initialize a cipher context based on an algorithm, mode and key

Note	For block ciphers a Nonce or IV can be passed if the selected mode requires it

function CipherDestroy(Context:PCipherContext):Boolean;

Description: Free a cipher context allocated by CipherCreate

Note	None documented

function CipherEncrypt(Context:PCipherContext; Plain,Crypt:Pointer; Size:LongWord):Boolean;

Description: Encrypt a block of data using an existing cipher context

Note	None documented

function CipherDecrypt(Context:PCipherContext; Crypt,Plain:Pointer; Size:LongWord):Boolean;

Description: Decrypt a block of data using an existing cipher context

Note	None documented

MD5 functions

function MD5DigestData(Data:PMD5Block; Digest:PMD5Digest):Boolean;

Description: Generate a 128 bit MD5 digest (Hash) from the supplied data

Data	Data is a linked list which can contain multiple independent blocks to be included in the hash. The data block itself does not form part of the hash.

function MD5DigestString(const Value:String; Digest:PMD5Digest):Boolean;

Description: Generate a 128 bit MD5 digest (Hash) from the supplied string value

Note	None documented

function HMACMD5DigestData(const Key:String; Data:PMD5Block; Digest:PMD5Digest):Boolean;

Description: Generate an MD5 HMAC (Hashed Message Authentication Code) using the Key and Data

Note	None documented

function HMACMD5DigestData(Key:Pointer; KeySize:LongWord; Data:PMD5Block; Digest:PMD5Digest):Boolean;

Description: Generate an MD5 HMAC (Hashed Message Authentication Code) using the Key and Data

Key	If Key is more than 64 bytes it will be hashed to Key = MD5(Key) instead If Key is less than 64 bytes it will be padded with zeros
Note	The MD5 HMAC algorithm is: MD5(Key xor oPad, MD5(Key xor iPad, Data)) Where iPad is the byte $36 repeated 64 times, oPad is the byte $5c repeated 64 times.

function HMACMD5DigestString(const Key,Value:String; Digest:PMD5Digest):Boolean;

Description: Generate an MD5 HMAC (Hashed Message Authentication Code) using the Key and Value

Key	If Key is more than 64 bytes it will be hashed to Key = MD5(Key) instead If Key is less than 64 bytes it will be padded with zeros
Note	The MD5 HMAC algorithm is: MD5(Key xor oPad, MD5(Key xor iPad, Data)) Where iPad is the byte $36 repeated 64 times, oPad is the byte $5c repeated 64 times.

AES functions

function AESEncryptData(Key:Pointer; KeySize:LongWord; Vector,Plain,Crypt:Pointer; Size:LongWord):Boolean;

Description: Encrypt a block of data using the AES cipher, if Vector is supplied use CBC mode else use ECB

KeySize	Key size must be 16, 24 or 32 bytes (128, 192 or 256 bits)
Vector	Vector must be 16 bytes (128 bits) long if supplied
Size	Size must be a multiple of 16 bytes long
Note	Plain text and Crypt data pointers must be the same length (and can point to the same value)

function AESDecryptData(Key:Pointer; KeySize:LongWord; Vector,Crypt,Plain:Pointer; Size:LongWord):Boolean;

Description: Decrypt a block of data using the AES cipher, if Vector is supplied use CBC mode else use ECB

KeySize	Key size must be 16, 24 or 32 bytes (128, 192 or 256 bits)
Vector	Vector must be 16 bytes (128 bits) long if supplied
Size	Size must be a multiple of 16 bytes long
Note	Plain text and Crypt data pointers must be the same length (and can point to the same value)

function AESCTREncryptData(Key:Pointer; KeySize:LongWord; Nonce,Plain,Crypt:Pointer; Size:LongWord):Boolean;

Description: Encrypt a block of data with the supplied Key and Nonce using AES CTR mode

KeySize	Key size must be 16, 24 or 32 bytes (128, 192 or 256 bits)
Nonce	Nonce must be 16 bytes (128 bits) long
Note	Plain text and Crypt data pointers must be the same length (and can point to the same value)

function AESCTRDecryptData(Key:Pointer; KeySize:LongWord; Nonce,Crypt,Plain:Pointer; Size:LongWord):Boolean; inline;

Description: Decrypt a block of data with the supplied Key and Nonce using AES CTR mode

KeySize	Key size must be 16, 24 or 32 bytes (128, 192 or 256 bits)
Nonce	Nonce must be 16 bytes (128 bits) long
Note	Plain text and Crypt data pointers must be the same length (and can point to the same value)

function AESGCMEncryptData(Key:Pointer; KeySize:LongWord; IV,AAD,Plain,Crypt:Pointer; IVSize,AADSize,Size:LongWord; Tag:Pointer):Boolean;

Description: Encrypt a block of data with the supplied Key, IV and AAD using AES GCM mode, return the authentication Tag

Tag	Tag must be 16 bytes (128 bits) long
Note	Plain text and Crypt data pointers must be the same length (and can point to the same value)

function AESGCMDecryptData(Key:Pointer; KeySize:LongWord; IV,AAD,Crypt,Plain:Pointer; IVSize,AADSize,Size:LongWord; const Tag:Pointer):Boolean;

Description: Decrypt a block of data with the supplied Key, IV and AAD using AES GCM mode, validate the authentication Tag

Tag	Tag must be 16 bytes (128 bits) long
Note	Plain text and Crypt data pointers must be the same length (and can point to the same value)

function AESGCMGMAC(Key:Pointer; KeySize:LongWord; IV,AAD:Pointer; IVSize,AADSize:LongWord; Tag:Pointer):Boolean;

Description: Generate the GMAC authentication Tag for a given Key, IV and AAD using AES GCM mode

Tag	Tag must be 16 bytes (128 bits) long

DES functions

function DESEncryptData(Key:Pointer; KeySize:LongWord; Vector,Plain,Crypt:Pointer; Size:LongWord):Boolean;

Description: To be documented

Note	None documented

function DESDecryptData(Key:Pointer; KeySize:LongWord; Vector,Crypt,Plain:Pointer; Size:LongWord):Boolean;

Description: To be documented

Note	None documented

3DES functions

function DES3EncryptData(Key:Pointer; KeySize:LongWord; Vector,Plain,Crypt:Pointer; Size:LongWord):Boolean;

Description: To be documented

Note	None documented

function DES3DecryptData(Key:Pointer; KeySize:LongWord; Vector,Crypt,Plain:Pointer; Size:LongWord):Boolean;

Description: To be documented

Note	None documented

RC4 functions

function RC4EncryptData(Key:Pointer; KeySize:LongWord; Plain,Crypt:Pointer; Size,Start:LongWord):Boolean;

Description: Encrypt the supplied data with a key using the RC4 cipher algorithm

Start	Specify how many bytes of the RC4 cipher stream to skip to allow for previous blocks of data or to comply with RFC4345 requirements to discard the first 1536 bytes of the RC4 cipher stream

function RC4DecryptData(Key:Pointer; KeySize:LongWord; Crypt,Plain:Pointer; Size,Start:LongWord):Boolean; inline;

Description: Encrypt the supplied data with a key using the RC4 cipher algorithm

Note	None documented

SHA1 functions

function SHA1DigestData(Data:PSHA1Block; Digest:PSHA1Digest):Boolean;

Description: Generate a 160 bit SHA1 digest (Hash) from the supplied data

Data	Data is a linked list which can contain multiple independent blocks to be included in the hash. The data block itself does not form part of the hash.

function SHA1DigestString(const Value:String; Digest:PSHA1Digest):Boolean;

Description: Generate a 160 bit SHA1 digest (Hash) from the supplied string value

Note	None documented

function HMACSHA1DigestData(const Key:String; Data:PSHA1Block; Digest:PSHA1Digest):Boolean;

Description: Generate a SHA1 HMAC (Hashed Message Authentication Code) using the Key and Data

Note	None documented

function HMACSHA1DigestData(Key:Pointer; KeySize:LongWord; Data:PSHA1Block; Digest:PSHA1Digest):Boolean;

Description: Generate a SHA1 HMAC (Hashed Message Authentication Code) using the Key and Data

Key	If Key is more than 64 bytes it will be hashed to Key = SHA1(Key) instead If Key is less than 64 bytes it will be padded with zeros
Note	The SHA1 HMAC algorithm is: SHA1(Key xor oPad, SHA1(Key xor iPad, Data)) Where iPad is the byte $36 repeated 64 times, oPad is the byte $5c repeated 64 times.

function HMACSHA1DigestString(const Key,Value:String; Digest:PSHA1Digest):Boolean;

Description: Generate a SHA1 HMAC (Hashed Message Authentication Code) using the Key and Value

Key	If Key is more than 64 bytes it will be hashed to Key = SHA1(Key) instead If Key is less than 64 bytes it will be padded with zeros
Note	The SHA1 HMAC algorithm is: SHA1(Key xor oPad, SHA1(Key xor iPad, Data)) Where iPad is the byte $36 repeated 64 times, oPad is the byte $5c repeated 64 times.

SHA256 functions

function SHA256DigestData(Data:PSHA256Block; Digest:PSHA256Digest):Boolean;

Description: Generate a 256 bit SHA256 digest (Hash) from the supplied data

Data	Data is a linked list which can contain multiple independent blocks to be included in the hash. The data block itself does not form part of the hash.

function SHA256DigestString(const Value:String; Digest:PSHA256Digest):Boolean;

Description: Generate a 256 bit SHA256 digest (Hash) from the supplied string value

Note	None documented

function HMACSHA256DigestData(const Key:String; Data:PSHA256Block; Digest:PSHA256Digest):Boolean;

Description: Generate a SHA256 HMAC (Hashed Message Authentication Code) using the Key and Data

Note	None documented

function HMACSHA256DigestData(Key:Pointer; KeySize:LongWord; Data:PSHA256Block; Digest:PSHA256Digest):Boolean;

Description: Generate a SHA256 HMAC (Hashed Message Authentication Code) using the Key and Data

Key	If Key is more than 64 bytes it will be hashed to Key = SHA256(Key) instead If Key is less than 64 bytes it will be padded with zeros.
Note	The SHA256 HMAC algorithm is: SHA256(Key xor oPad, SHA256(Key xor iPad, Value)) Where iPad is the byte $36 repeated 64 times, oPad is the byte $5c repeated 64 times.

function HMACSHA256DigestString(const Key,Value:String; Digest:PSHA256Digest):Boolean;

Description: Generate a SHA256 HMAC (Hashed Message Authentication Code) using the Key and Value

Key	If Key is more than 64 bytes it will be hashed to Key = SHA256(Key) instead If Key is less than 64 bytes it will be padded with zeros.
Note	The SHA256 HMAC algorithm is: SHA256(Key xor oPad, SHA256(Key xor iPad, Value)) Where iPad is the byte $36 repeated 64 times, oPad is the byte $5c repeated 64 times.

SHA384 functions

function SHA384DigestData(Data:PSHA384Block; Digest:PSHA384Digest):Boolean;

Description: Generate a 384 bit SHA384 digest (Hash) from the supplied data

Data	Data is a linked list which can contain multiple independent blocks to be included in the hash. The data block itself does not form part of the hash.

function SHA384DigestString(const Value:String; Digest:PSHA384Digest):Boolean;

Description: Generate a 384 bit SHA384 digest (Hash) from the supplied string value

Note	None documented

function HMACSHA384DigestData(const Key:String; Data:PSHA384Block; Digest:PSHA384Digest):Boolean;

Description: Generate a SHA384 HMAC (Hashed Message Authentication Code) using the Key and Data

Note	None documented

function HMACSHA384DigestData(Key:Pointer; KeySize:LongWord; Data:PSHA384Block; Digest:PSHA384Digest):Boolean;

Description: Generate a SHA384 HMAC (Hashed Message Authentication Code) using the Key and Data

Key	If Key is more than 128 bytes it will be hashed to Key = SHA384(Key) instead If Key is less than 128 bytes it will be padded with zeros
Note	The SHA384 HMAC algorithm is: SHA384(Key xor oPad, SHA384(Key xor iPad, Data)) Where iPad is the byte $36 repeated 128 times, oPad is the byte $5c repeated 128 times.

function HMACSHA384DigestString(const Key,Value:String; Digest:PSHA384Digest):Boolean;

Description: Generate a SHA384 HMAC (Hashed Message Authentication Code) using the Key and Value

Note	None documented

SHA512 functions

function SHA512DigestData(Data:PSHA512Block; Digest:PSHA512Digest):Boolean;

Description: Generate a 512 bit SHA512 digest (Hash) from the supplied data

Data	Data is a linked list which can contain multiple independent blocks to be included in the hash. The data block itself does not form part of the hash.

function SHA512DigestString(const Value:String; Digest:PSHA512Digest):Boolean;

Description: Generate a 512 bit SHA512 digest (Hash) from the supplied string value

Note	None documented

function HMACSHA512DigestData(const Key:String; Data:PSHA512Block; Digest:PSHA512Digest):Boolean;

Description: Generate a SHA512 HMAC (Hashed Message Authentication Code) using the Key and Data

Note	None documented

function HMACSHA512DigestData(Key:Pointer; KeySize:LongWord; Data:PSHA512Block; Digest:PSHA512Digest):Boolean;

Description: Generate a SHA512 HMAC (Hashed Message Authentication Code) using the Key and Data

Key	If Key is more than 128 bytes it will be hashed to Key = SHA512(Key) instead If Key is less than 128 bytes it will be padded with zeros
Note	The SHA512 HMAC algorithm is: SHA512(Key xor oPad, SHA384(Key xor iPad, Data)) Where iPad is the byte $36 repeated 128 times, oPad is the byte $5c repeated 128 times.

function HMACSHA512DigestString(const Key,Value:String; Digest:PSHA512Digest):Boolean;

Description: Generate a SHA512 HMAC (Hashed Message Authentication Code) using the Key and Value

Note	None documented

RSA functions

function RSAInitPrivateKey(Modulus,PublicExp,PrivateExp,P,Q,DP,DQ,QInv:PByte; ModulusLen,PublicExpLen,PrivateExpLen,PLen,QLen,DPLen,DQLen,QInvLen:Integer):PRSAContext;

Description: To be documented

Note	None documented

function RSAInitPublicKey(Modulus,PublicExp:PByte; ModulusLen,PublicExpLen:Integer):PRSAContext;

Description: To be documented

Note	None documented

function RSAFreeKey(Context:PRSAContext):Boolean;

Description: Free an RSA context containing Private and/or Public keys

Note	None documented

function RSAEncryptSign(Context:PRSAContext; const Input:PByte; Len:Integer; Output:PByte; Sign:Boolean):Integer;

Description: Perform PKCS1.5 Encryption or Signing

Context	The RSA context containing Private and/or Public keys
Input	The data to be encrypted
Len	The size of the input data in bytes (Must be <= Modulus length - 11 to make the padding at least 8 bytes as recommended by RFC2313)
Output	The buffer for the encrypted result (Must always be Modulus length)
Sign	If true then sign instead of encrypting
Return	The number of bytes encrypted or -1 on error

function RSADecryptVerify(Context:PRSAContext; const Input:PByte; Output:PByte; Len:Integer; Verify:Boolean):Integer;

Description: Perform PKCS1.5 Decryption or Verification

Context	The RSA context containing Private and/or Public keys
Input	The data to be decrypted (Must always be Modulus length)
Output	The buffer for the decrypted result
Len	The size of the output buffer in bytes
Verify	If true then verify instead of decrypting
Return	The number of bytes decrypted or -1 on error

Random functions

function GetRandomBytes(Buffer:PByte; Count:Integer):Boolean;

Description: To be documented

Note	None documented

function GetRandomBytesNonZero(Buffer:PByte; Count:Integer):Boolean;

Description: To be documented

Note	None documented

CRC functions

function CRC16CCITT(CRC:Word; Data:PByte; Size:LongWord):Word;

Description: To be documented

Note	None documented

Base64 functions

function Base64EncodeString(const Value:String):String;

Description: Encode a string using Base64 encoding and return the encoded result

Note	None documented

function Base64DecodeString(const Value:String):String;

Description: Decode a Base64 encoded string and return the decoded result

Note	None documented

function Base64EncodeBuffer(const Source:PChar; SourceLen:Integer; Dest:PChar; var DestLen:Integer):Boolean;

Description: Encode the source buffer using Base64 encoding and return the encoded result in the destination buffer

Note	On success DestLen contains the actual encoded length including a null terminator If Dest is nil then return success (True) with the required size in DestLen

function Base64DecodeBuffer(const Source:PChar; SourceLen:Integer; Dest:PChar; var DestLen:Integer):Boolean;

Description: Decode a Base64 encoded source buffer and return the decoded result in the destination buffer

Note	On success DestLen contains the actual decoded length (Null terminator is not added to this value) If Dest is nil then return success (True) with the required size in DestLen

Crypto helper functions

procedure BytesToLE32(Buffer:PByte; Count:LongWord);

Description: Change the byte order of count longwords in the supplied buffer to little endian

Note	None documented

procedure BytesToBE32(Buffer:PByte; Count:LongWord);

Description: Change the byte order of count longwords in the supplied buffer to big endian

Note	None documented

procedure BytesToLE64(Buffer:PByte; Count:LongWord);

Description: Change the byte order of count quadwords in the supplied buffer to little endian

Note	None documented

procedure BytesToBE64(Buffer:PByte; Count:LongWord);

Description: Change the byte order of count quadwords in the supplied buffer to big endian

Note	None documented

function LongWordToBE(Buffer:PByte):LongWord; inline;

Description: To be documented

Note	None documented

procedure BEToLongWord(Value:LongWord; Buffer:PByte); inline;

Description: To be documented

Note	None documented

function QWordToBE(Buffer:PByte):QWord; inline;

Description: To be documented

Note	None documented

procedure BEToQWord(Value:QWord; Buffer:PByte); inline;

Description: To be documented

Note	None documented

MD5 helper functions

procedure MD5Init(var Context:TMD5Context);

Description: Initialize an MD5 context with constants

Note	None documented

procedure MD5Transform(var Context:TMD5Context; Buffer:Pointer);

Description: The core MD5 algorithm, adds an additional 64 Bytes (16 LongWords) to the hash

Note	None documented

procedure MD5Update(var Context:TMD5Context; Data:Pointer; Size:LongWord);

Description: Add more bytes to the data buffer, add to the hash in 64 byte chunks

Note	None documented

procedure MD5Final(var Context:TMD5Context; var Digest:TMD5Digest);

Description: Finalize the MD5 context by padding to a 64 Byte boundary, adding QWord count of bits processed and copying the hash to the digest

Note	None documented

function MD5DigestToString(Digest:PMD5Digest):String;

Description: To be documented

Note	None documented

AES helper functions

function AESKeySetup(Key:Pointer; KeySize:LongWord; AESKey:PAESKey):Boolean;

Description: Create a pair of AES keys using the supplied key

KeySize	Key size must be 16, 24 or 32 bytes (128, 192 or 256 bits)

procedure AESEncryptBlock(Plain,Crypt:Pointer; AESKey:PAESKey);

Description: AES Encrypt a 16 byte (128 bit) block of data using the supplied key

Note	None documented

procedure AESDecryptBlock(Crypt,Plain:Pointer; AESKey:PAESKey);

Description: AES Decrypt a 16 byte (128 bit) block of data using the supplied key

Note	None documented

DES helper functions

procedure DESCook(Raw1:PLongWord; Key:PDESKey);

Description: To be documented

Note	None documented

procedure DESKey(Key:PByte; KeyType:LongWord; CryptKey:PDESKey);

Description: To be documented

Note	None documented

procedure DESProcess(Block,Key:PLongWord);

Description: To be documented

Note	None documented

function DESKeySetup(Key:Pointer; KeySize:LongWord; EncryptKey,DecryptKey:PDESKey):Boolean;

Description: To be documented

Note	None documented

procedure DESEncryptBlock(Plain,Crypt:Pointer; EncryptKey:PDESKey);

Description: To be documented

Note	None documented

procedure DESDecryptBlock(Crypt,Plain:Pointer; DecryptKey:PDESKey);

Description: To be documented

Note	None documented

3DES helper functions

function DES3KeySetup(Key:Pointer; KeySize:LongWord; DES3Key:PDES3Key):Boolean;

Description: To be documented

Note	None documented

procedure DES3EncryptBlock(Plain,Crypt:Pointer; DES3Key:PDES3Key);

Description: To be documented

Note	None documented

procedure DES3DecryptBlock(Crypt,Plain:Pointer; DES3Key:PDES3Key);

Description: To be documented

Note	None documented

SHA1 helper functions

procedure SHA1Init(var Context:TSHA1Context);

Description: Initialize a SHA1 context with constants

Note	None documented

procedure SHA1Transform(var Context:TSHA1Context; Buffer:Pointer);

Description: The core SHA1 algorithm, adds an additional 64 Bytes (512 bits) to the hash

Note	None documented

procedure SHA1Update(var Context:TSHA1Context; Data:Pointer; Size:LongWord);

Description: Add more bytes to the data buffer, add to the hash in 64 byte chunks

Note	None documented

procedure SHA1Final(var Context:TSHA1Context; var Digest:TSHA1Digest);

Description: Finalize the SHA1 context by padding to a 64 Byte boundary, adding QWord count of bits processed and copying the hash to the digest

Note	None documented

function SHA1DigestToString(Digest:PSHA1Digest):String;

Description: To be documented

Note	None documented

SHA256 helper functions

procedure SHA256Init(var Context:TSHA256Context);

Description: Initialize a SHA256 context with constants

Note	None documented

procedure SHA256Compress(var Context:TSHA256Context; Buffer:Pointer);

Description: The core SHA256 algorithm, adds an additional 64 Bytes (512 bits) to the hash

Note	None documented

procedure SHA256Process(var Context:TSHA256Context; Data:Pointer; Size:LongWord);

Description: Add more bytes to the data buffer, add to the hash in 64 byte chunks

Note	None documented

procedure SHA256Complete(var Context:TSHA256Context; var Digest:TSHA256Digest);

Description: Finalize the SHA256 context by padding to a 64 Byte boundary, adding QWord count of bits processed and copying the hash to the digest

Note	None documented

function SHA256DigestToString(Digest:PSHA256Digest):String;

Description: To be documented

Note	None documented

SHA384 helper functions

procedure SHA384Init(var Context:TSHA384Context);

Description: Initialize a SHA384 context with constants

Note	None documented

procedure SHA384Process(var Context:TSHA384Context; Data:Pointer; Size:LongWord);

Description: Add more bytes to the data buffer, add to the hash in 128 byte chunks

Note	None documented

procedure SHA384Complete(var Context:TSHA384Context; var Digest:TSHA384Digest);

Description: Finalize the SHA384 context by padding to a 128 Byte boundary, adding QWord count of bits processed and copying the hash to the digest

Note	None documented

function SHA384DigestToString(Digest:PSHA384Digest):String;

Description: To be documented

Note	None documented

SHA512 helper functions

procedure SHA512Init(var Context:TSHA512Context);

Description: Initialize a SHA512 context with constants

Note	None documented

procedure SHA512Compress(var Context:TSHA512Context; Buffer:Pointer);

Description: The core SHA512 algorithm, adds an additional 128 Bytes (1024 bits) to the hash

Note	None documented

procedure SHA512Process(var Context:TSHA512Context; Data:Pointer; Size:LongWord);

Description: Add more bytes to the data buffer, add to the hash in 128 byte chunks

Note	None documented

procedure SHA512Complete(var Context:TSHA512Context; var Digest:TSHA512Digest);

Description: Finalize the SHA512 context by padding to a 128 Byte boundary, adding QWord count of bits processed and copying the hash to the digest

Note	None documented

function SHA512DigestToString(Digest:PSHA512Digest):String;

Description: To be documented

Note	None documented

Base64 helper functions

procedure Base64InitTables;

Description: To be documented

Note	None documented

Return to Unit Reference

`CRYPTO_CIPHER_ALG_NONE = 0;`
`CRYPTO_CIPHER_ALG_AES = 1;`
`CRYPTO_CIPHER_ALG_DES = 2;`
`CRYPTO_CIPHER_ALG_3DES = 3;`
`CRYPTO_CIPHER_ALG_RC4 = 4;`

Difference between revisions of "Unit Crypto"

Latest revision as of 04:40, 31 August 2021

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@@ Line 5: / Line 5: @@
 ----
-'''Ultibo Crypto interface unit'''
+'''Ultibo Crypto Interface unit'''
-''To be documented''
 === Constants ===
@@ Line 101: / Line 99: @@
 |-
 | <code>CRYPTO_HASH_ALG_HMAC_SHA512 = 10;</code>
+| &nbsp;
+|-
+| <code>CRYPTO_HASH_ALG_SHA224 = 11;</code>
+| &nbsp;
+|-
+| <code>CRYPTO_HASH_ALG_HMAC_SHA224 = 12;</code>
 | &nbsp;
 |-
 |}
 </div></div>
 <br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 20px; padding-bottom: 15px;">
+<div style="font-size: 14px; padding-left: 12px;">'''MD5 digest size''' <code> MD5_DIGEST_* </code></div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+| <code>MD5_DIGEST_SIZE = 16;</code>
+| style="width: 50%;"|&nbsp;
+|-
+|}
+</div></div>
+<br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 20px; padding-bottom: 15px;">
 <div style="font-size: 14px; padding-left: 12px;">'''AES block size''' <code> AES_BLOCK_* </code></div>
@@ Line 131: / Line 146: @@
 | 256 bit keys
 |-
+|colspan="2"|&nbsp;
+|-
+| <code>AES_IV_SIZE = 16;</code>
+| 128 bit initialization vector
+|-
 |}
 </div></div>
@@ Line 203: / Line 223: @@
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
+|-
+| <code>SHA1_DIGEST_SIZE = 20;</code>
+| style="width: 50%;"|&nbsp;
+|-
+|colspan="2"|&nbsp;
 |-
 | <code>SHA1_K20 = $5A827999;</code>
@@ Line 219: / Line 244: @@
 </div></div>
 <br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 20px; padding-bottom: 15px;">
+<div style="font-size: 14px; padding-left: 12px;">'''SHA256 constants''' <code> SHA256_* </code></div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+| <code>SHA256_DIGEST_SIZE = 32;</code>
+| style="width: 50%;"|&nbsp;
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 20px; padding-bottom: 15px;">
+<div style="font-size: 14px; padding-left: 12px;">'''SHA384 constants''' <code> SHA384_* </code></div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+| <code>SHA384_DIGEST_SIZE = 48;</code>
+| style="width: 50%;"|&nbsp;
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 20px; padding-bottom: 15px;">
+<div style="font-size: 14px; padding-left: 12px;">'''SHA512 constants''' <code> SHA512_* </code></div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+| <code>SHA512_DIGEST_SIZE = 64;</code>
+| style="width: 50%;"|&nbsp;
+|-
+|}
+</div></div>
+<br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 20px; padding-bottom: 15px;">
 <div style="font-size: 14px; padding-left: 12px;">'''RSA constants''' <code> RSA_* </code></div>
@@ Line 993: / Line 1,051: @@
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
 <pre style="border: 0; padding-bottom:0px;">function HashCreate(Algorithm:LongWord; Key:Pointer; KeySize:LongWord):PHashContext;</pre>
-<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Initialize a hash context based on an algorithm and an optional key</div>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Initialize a hash context based on an algorithm and (if applicable) a key</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
@@ Line 1,006: / Line 1,064: @@
 <pre style="border: 0; padding-bottom:0px;">function HashDestroy(Context:PHashContext):Boolean;</pre>
 <div style="font-size: 14px; padding-left: 12px;">'''Description:''' Free a hash context allocated by HashCreate</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function HashReset(Context:PHashContext):Boolean;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Clear and reinitialize an existing hash context using the existing algorithm and key</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function HashReset(Context:PHashContext; Algorithm:LongWord; Key:Pointer; KeySize:LongWord):Boolean;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Clear and reinitialize an existing hash context using a new algorithm and key</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
@@ Line 1,040: / Line 1,122: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
-<pre style="border: 0; padding-bottom:0px;">function CipherCreate(Algorithm:LongWord; Vector,Key:Pointer; KeySize:LongWord):PCipherContext; overload;</pre>
+<pre style="border: 0; padding-bottom:0px;">function CipherCreate(Algorithm:LongWord; Vector,Key:Pointer; KeySize:LongWord):PCipherContext;</pre>
 <div style="font-size: 14px; padding-left: 12px;">'''Description:''' Initialize a cipher context based on an algorithm and a key</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
@@ Line 1,052: / Line 1,134: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
-<pre style="border: 0; padding-bottom:0px;">function CipherCreate(Algorithm,Mode:LongWord; Nonce,Vector,Key:Pointer; VectorSize,KeySize:LongWord):PCipherContext; overload;</pre>
+<pre style="border: 0; padding-bottom:0px;">function CipherCreate(Algorithm,Mode:LongWord; Nonce,Vector,Key:Pointer; VectorSize,KeySize:LongWord):PCipherContext;</pre>
 <div style="font-size: 14px; padding-left: 12px;">'''Description:''' Initialize a cipher context based on an algorithm, mode and key</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
@@ Line 1,109: / Line 1,191: @@
 |-
 ! Data
-| A linked list which can contain multiple independent blocks to be included in the hash. The data block itself does not form part of the hash.
+| Data is a linked list which can contain multiple independent blocks to be included in the hash. The data block itself does not form part of the hash.
 |-
 |}
@@ Line 1,128: / Line 1,210: @@
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
 <pre style="border: 0; padding-bottom:0px;">function HMACMD5DigestData(const Key:String; Data:PMD5Block; Digest:PMD5Digest):Boolean;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Generate an MD5 HMAC (Hashed Message Authentication Code) using the Key and Data</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function HMACMD5DigestData(Key:Pointer; KeySize:LongWord; Data:PMD5Block; Digest:PMD5Digest):Boolean;</pre>
 <div style="font-size: 14px; padding-left: 12px;">'''Description:''' Generate an MD5 HMAC (Hashed Message Authentication Code) using the Key and Data</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
@@ Line 1,133: / Line 1,227: @@
 |-
 ! Key
-| If Key is more than 64 bytes it will be hashed to Key = MD5(Key) instead. If Key is less than 64 bytes it will be padded with zeros.
+| If Key is more than 64 bytes it will be hashed to Key = MD5(Key) instead
+If Key is less than 64 bytes it will be padded with zeros
 |-
 ! Note
-| The MD5 HMAC algorithm is: MD5(Key xor oPad, MD5(Key xor iPad, Data)). Where iPad is the byte $36 repeated 64 times, oPad is the byte $5c repeated 64 times.
+| The MD5 HMAC algorithm is:
+MD5(Key xor oPad, MD5(Key xor iPad, Data))
+<br />Where iPad is the byte $36 repeated 64 times, oPad is the byte $5c repeated 64 times.
 |-
 |}
@@ Line 1,148: / Line 1,245: @@
 |-
 ! Key
-| If Key is more than 64 bytes it will be hashed to Key = MD5(Key) instead. If Key is less than 64 bytes it will be padded with zeros.
+| If Key is more than 64 bytes it will be hashed to Key = MD5(Key) instead
+If Key is less than 64 bytes it will be padded with zeros
 |-
 ! Note
-| The MD5 HMAC algorithm is: MD5(Key xor oPad, MD5(Key xor iPad, Value)). Where iPad is the byte $36 repeated 64 times, oPad is the byte $5c repeated 64 times.
+| The MD5 HMAC algorithm is:
+MD5(Key xor oPad, MD5(Key xor iPad, Data))
+<br />Where iPad is the byte $36 repeated 64 times, oPad is the byte $5c repeated 64 times.
 |-
 |}
@@ Line 1,350: / Line 1,450: @@
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
 <pre style="border: 0; padding-bottom:0px;">function RC4DecryptData(Key:Pointer; KeySize:LongWord; Crypt,Plain:Pointer; Size,Start:LongWord):Boolean; inline;</pre>
-<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Decrypt the supplied data with a key using the RC4 cipher algorithm</div>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Encrypt the supplied data with a key using the RC4 cipher algorithm</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
@@ Line 1,370: / Line 1,470: @@
 |-
 ! Data
-| A linked list which can contain multiple independent blocks to be included in the hash. The data block itself does not form part of the hash.
+| Data is a linked list which can contain multiple independent blocks to be included in the hash. The data block itself does not form part of the hash.
 |-
 |}
@@ Line 1,389: / Line 1,489: @@
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
 <pre style="border: 0; padding-bottom:0px;">function HMACSHA1DigestData(const Key:String; Data:PSHA1Block; Digest:PSHA1Digest):Boolean;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Generate a SHA1 HMAC (Hashed Message Authentication Code) using the Key and Data</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function HMACSHA1DigestData(Key:Pointer; KeySize:LongWord; Data:PSHA1Block; Digest:PSHA1Digest):Boolean;</pre>
 <div style="font-size: 14px; padding-left: 12px;">'''Description:''' Generate a SHA1 HMAC (Hashed Message Authentication Code) using the Key and Data</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
@@ Line 1,394: / Line 1,506: @@
 |-
 ! Key
-| If Key is more than 64 bytes it will be hashed to Key = SHA1(Key) instead. If Key is less than 64 bytes it will be padded with zeros.
+| If Key is more than 64 bytes it will be hashed to Key = SHA1(Key) instead
+If Key is less than 64 bytes it will be padded with zeros
 |-
 ! Note
-| The SHA1 HMAC algorithm is: SHA1(Key xor oPad, SHA1(Key xor iPad, Data)). Where iPad is the byte $36 repeated 64 times, oPad is the byte $5c repeated 64 times.
+| The SHA1 HMAC algorithm is:
+SHA1(Key xor oPad, SHA1(Key xor iPad, Data))
+<br />Where iPad is the byte $36 repeated 64 times, oPad is the byte $5c repeated 64 times.
 |-
 |}
@@ Line 1,409: / Line 1,524: @@
 |-
 ! Key
-| If Key is more than 64 bytes it will be hashed to Key = SHA1(Key) instead. If Key is less than 64 bytes it will be padded with zeros.
+| If Key is more than 64 bytes it will be hashed to Key = SHA1(Key) instead
+If Key is less than 64 bytes it will be padded with zeros
 |-
 ! Note
-| The SHA1 HMAC algorithm is: SHA1(Key xor oPad, SHA1(Key xor iPad, Value)). Where iPad is the byte $36 repeated 64 times, oPad is the byte $5c repeated 64 times.
+| The SHA1 HMAC algorithm is:
+SHA1(Key xor oPad, SHA1(Key xor iPad, Data))
+<br />Where iPad is the byte $36 repeated 64 times, oPad is the byte $5c repeated 64 times.
 |-
 |}
@@ Line 1,427: / Line 1,545: @@
 |-
 ! Data
-| A linked list which can contain multiple independent blocks to be included in the hash. The data block itself does not form part of the hash.
+| Data is a linked list which can contain multiple independent blocks to be included in the hash. The data block itself does not form part of the hash.
 |-
 |}
@@ Line 1,446: / Line 1,564: @@
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
 <pre style="border: 0; padding-bottom:0px;">function HMACSHA256DigestData(const Key:String; Data:PSHA256Block; Digest:PSHA256Digest):Boolean;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Generate a SHA256 HMAC (Hashed Message Authentication Code) using the Key and Data</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function HMACSHA256DigestData(Key:Pointer; KeySize:LongWord; Data:PSHA256Block; Digest:PSHA256Digest):Boolean;</pre>
 <div style="font-size: 14px; padding-left: 12px;">'''Description:''' Generate a SHA256 HMAC (Hashed Message Authentication Code) using the Key and Data</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
@@ Line 1,451: / Line 1,581: @@
 |-
 ! Key
-| If Key is more than 64 bytes it will be hashed to Key = SHA256(Key) instead. If Key is less than 64 bytes it will be padded with zeros.
+| If Key is more than 64 bytes it will be hashed to Key = SHA256(Key) instead
+If Key is less than 64 bytes it will be padded with zeros.
 |-
 ! Note
-| The SHA256 HMAC algorithm is: SHA256(Key xor oPad, SHA256(Key xor iPad, Data)). Where iPad is the byte $36 repeated 64 times, oPad is the byte $5c repeated 64 times.
+| The SHA256 HMAC algorithm is:
+SHA256(Key xor oPad, SHA256(Key xor iPad, Value))
+<br />Where iPad is the byte $36 repeated 64 times, oPad is the byte $5c repeated 64 times.
 |-
 |}
@@ Line 1,466: / Line 1,599: @@
 |-
 ! Key
-| If Key is more than 64 bytes it will be hashed to Key = SHA256(Key) instead. If Key is less than 64 bytes it will be padded with zeros.
+| If Key is more than 64 bytes it will be hashed to Key = SHA256(Key) instead
+If Key is less than 64 bytes it will be padded with zeros.
 |-
 ! Note
-| The SHA256 HMAC algorithm is: SHA256(Key xor oPad, SHA256(Key xor iPad, Value)). Where iPad is the byte $36 repeated 64 times, oPad is the byte $5c repeated 64 times.
+| The SHA256 HMAC algorithm is:
+SHA256(Key xor oPad, SHA256(Key xor iPad, Value))
+<br />Where iPad is the byte $36 repeated 64 times, oPad is the byte $5c repeated 64 times.
 |-
 |}
@@ Line 1,484: / Line 1,620: @@
 |-
 ! Data
-| A linked list which can contain multiple independent blocks to be included in the hash. The data block itself does not form part of the hash.
+| Data is a linked list which can contain multiple independent blocks to be included in the hash. The data block itself does not form part of the hash.
 |-
 |}
@@ Line 1,503: / Line 1,639: @@
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
 <pre style="border: 0; padding-bottom:0px;">function HMACSHA384DigestData(const Key:String; Data:PSHA384Block; Digest:PSHA384Digest):Boolean;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Generate a SHA384 HMAC (Hashed Message Authentication Code) using the Key and Data</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function HMACSHA384DigestData(Key:Pointer; KeySize:LongWord; Data:PSHA384Block; Digest:PSHA384Digest):Boolean;</pre>
 <div style="font-size: 14px; padding-left: 12px;">'''Description:''' Generate a SHA384 HMAC (Hashed Message Authentication Code) using the Key and Data</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
@@ Line 1,508: / Line 1,656: @@
 |-
 ! Key
-| If Key is more than 128 bytes it will be hashed to Key = SHA384(Key) instead. If Key is less than 128 bytes it will be padded with zeros.
+| If Key is more than 128 bytes it will be hashed to Key = SHA384(Key) instead
+If Key is less than 128 bytes it will be padded with zeros
 |-
 ! Note
-| The SHA384 HMAC algorithm is: SHA384(Key xor oPad, SHA384(Key xor iPad, Data)). Where iPad is the byte $36 repeated 128 times, oPad is the byte $5c repeated 128 times.
+| The SHA384 HMAC algorithm is:
+SHA384(Key xor oPad, SHA384(Key xor iPad, Data))
+<br />Where iPad is the byte $36 repeated 128 times, oPad is the byte $5c repeated 128 times.
 |-
 |}
@@ Line 1,538: / Line 1,689: @@
 |-
 ! Data
-| A linked list which can contain multiple independent blocks to be included in the hash. The data block itself does not form part of the hash.
+| Data is a linked list which can contain multiple independent blocks to be included in the hash. The data block itself does not form part of the hash.
 |-
 |}
@@ Line 1,557: / Line 1,708: @@
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
 <pre style="border: 0; padding-bottom:0px;">function HMACSHA512DigestData(const Key:String; Data:PSHA512Block; Digest:PSHA512Digest):Boolean;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Generate a SHA512 HMAC (Hashed Message Authentication Code) using the Key and Data</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function HMACSHA512DigestData(Key:Pointer; KeySize:LongWord; Data:PSHA512Block; Digest:PSHA512Digest):Boolean;</pre>
 <div style="font-size: 14px; padding-left: 12px;">'''Description:''' Generate a SHA512 HMAC (Hashed Message Authentication Code) using the Key and Data</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
@@ Line 1,562: / Line 1,725: @@
 |-
 ! Key
-| If Key is more than 128 bytes it will be hashed to Key = SHA512(Key) instead. If Key is less than 128 bytes it will be padded with zeros.
+| If Key is more than 128 bytes it will be hashed to Key = SHA512(Key) instead
+If Key is less than 128 bytes it will be padded with zeros
 |-
 ! Note
-| The SHA512 HMAC algorithm is: SHA512(Key xor oPad, SHA384(Key xor iPad, Data)). Where iPad is the byte $36 repeated 128 times, oPad is the byte $5c repeated 128 times.
+| The SHA512 HMAC algorithm is:
+SHA512(Key xor oPad, SHA384(Key xor iPad, Data))
+<br />Where iPad is the byte $36 repeated 128 times, oPad is the byte $5c repeated 128 times.
 |-
 |}
@@ Line 1,611: / Line 1,777: @@
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
 <pre style="border: 0; padding-bottom:0px;">function RSAFreeKey(Context:PRSAContext):Boolean;</pre>
-<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Free an RSA context containing Private and/or Public keys</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
@@ Line 1,622: / Line 1,788: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
-<pre style="border: 0; padding-bottom:0px;">function RSAEncryptSign(Context:PRSAContext; const Input:PByte; Len:Word; Output:PByte; Sign:Boolean):Integer;</pre>
+<pre style="border: 0; padding-bottom:0px;">function RSAEncryptSign(Context:PRSAContext; const Input:PByte; Len:Integer; Output:PByte; Sign:Boolean):Integer;</pre>
 <div style="font-size: 14px; padding-left: 12px;">'''Description:''' Perform PKCS1.5 Encryption or Signing</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
@@ Line 1,875: / Line 2,041: @@
 <pre style="border: 0; padding-bottom:0px;">procedure MD5Init(var Context:TMD5Context);</pre>
 <div style="font-size: 14px; padding-left: 12px;">'''Description:''' Initialize an MD5 context with constants</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">procedure MD5Transform(var Context:TMD5Context; Buffer:Pointer);</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' The core MD5 algorithm, adds an additional 64 Bytes (16 LongWords) to the hash</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
@@ Line 1,962: / Line 2,140: @@
 '''DES helper functions'''
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">procedure DESCook(Raw1:PLongWord; Key:PDESKey);</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">procedure DESKey(Key:PByte; KeyType:LongWord; CryptKey:PDESKey);</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">procedure DESProcess(Block,Key:PLongWord);</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
 <pre style="border: 0; padding-bottom:0px;">function DESKeySetup(Key:Pointer; KeySize:LongWord; EncryptKey,DecryptKey:PDESKey):Boolean;</pre>
@@ Line 2,043: / Line 2,257: @@
 <pre style="border: 0; padding-bottom:0px;">procedure SHA1Init(var Context:TSHA1Context);</pre>
 <div style="font-size: 14px; padding-left: 12px;">'''Description:''' Initialize a SHA1 context with constants</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">procedure SHA1Transform(var Context:TSHA1Context; Buffer:Pointer);</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' The core SHA1 algorithm, adds an additional 64 Bytes (512 bits) to the hash</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
@@ Line 2,094: / Line 2,320: @@
 <pre style="border: 0; padding-bottom:0px;">procedure SHA256Init(var Context:TSHA256Context);</pre>
 <div style="font-size: 14px; padding-left: 12px;">'''Description:''' Initialize a SHA256 context with constants</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">procedure SHA256Compress(var Context:TSHA256Context; Buffer:Pointer);</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' The core SHA256 algorithm, adds an additional 64 Bytes (512 bits) to the hash</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
@@ Line 2,196: / Line 2,434: @@
 <pre style="border: 0; padding-bottom:0px;">procedure SHA512Init(var Context:TSHA512Context);</pre>
 <div style="font-size: 14px; padding-left: 12px;">'''Description:''' Initialize a SHA512 context with constants</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">procedure SHA512Compress(var Context:TSHA512Context; Buffer:Pointer);</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' The core SHA512 algorithm, adds an additional 128 Bytes (1024 bits) to the hash</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"