// Calculate the Hash of values for two edit controls Hash1 is TO Buffer = HashString(HA_MD5_128, SAI_Saisie1) Hash2 is TO Buffer = HashString(HA_MD5_128, SAI_Saisie2) // Compare the two Hash IF Hash1 = Hash2 THEN Info("The two strings are identical.")

TIGER/WHIRLPOOL algorithms: hash functions with high cryptographic properties optimized for the 64-bit mode (but can also be used in 32-bit mode).

CKSUM algorithms: hash functions with no cryptographic property, should be used to perform low-level checks or with hashing tables.

Versions 22 and later DJB2 algorithm (Bernstein): hash functions reserved to strings and with no cryptographic property, should be used to perform low-level checks or with hashing tables. Few risks to get an identical hash.

New in version 22 DJB2 algorithm (Bernstein): hash functions reserved to strings and with no cryptographic property, should be used to perform low-level checks or with hashing tables. Few risks to get an identical hash.

DJB2 algorithm (Bernstein): hash functions reserved to strings and with no cryptographic property, should be used to perform low-level checks or with hashing tables. Few risks to get an identical hash.

Versions 24 and later MURMUR algorithm: very fast hash functions with no cryptographic properties. This algorithm is used by the "bloom filter" of bitcoin wallets.

New in version 24 MURMUR algorithm: very fast hash functions with no cryptographic properties. This algorithm is used by the "bloom filter" of bitcoin wallets.

MURMUR algorithm: very fast hash functions with no cryptographic properties. This algorithm is used by the "bloom filter" of bitcoin wallets.

<String>: Character string (with quotes)

String on which the calculation will be performed. This parameter can contain binary characters.

Calculating a hash with message authentication (HMAC/MURMUR algorithm) Hide the details

<Result> = HashString(<Type of algorithm> , <String> , <Secret key>)

<Result>: Buffer

Result of <String> hashing with the <Type of algorithm> algorithm. The length of this string depends on the algorithm used. For example, if the HA_HMAC_SHA_256 constant is used, the result will contain 32 bytes.

Caution: this result may contain non-displayable characters.

<Type of algorithm>: Integer constant

Indicates the type of algorithm (HMAC or MURMUR) used to hash the <String> string:

Versions 25 and later MD4 family

New in version 25 MD4 family

MD4 family

Versions 25 and later HA_HMAC_MD4

Not available.

New in version 25 HA_HMAC_MD4

Not available.

HA_HMAC_MD4

Not available.

Versions 26 and later

This constant is now available.

New in version 26

This constant is now available.

This constant is now available.

MD5 family

HA_HMAC_MD5_128

Versions 24 and later MURMUR family

New in version 24 MURMUR family

MURMUR family

Versions 24 and later HA_MURMUR_1: Murmur algorithm version 1: 32-bit hash result

New in version 24 HA_MURMUR_1: Murmur algorithm version 1: 32-bit hash result

HA_MURMUR_1: Murmur algorithm version 1: 32-bit hash result

Versions 24 and later HA_MURMUR_2: Murmur algorithm version 2: 32-bit hash result

New in version 24 HA_MURMUR_2: Murmur algorithm version 2: 32-bit hash result

HA_MURMUR_2: Murmur algorithm version 2: 32-bit hash result

Versions 24 and later HA_MURMUR_2_64A: Murmur algorithm version 2: 64-bit hash result optimized for 64-bit processors

New in version 24 HA_MURMUR_2_64A: Murmur algorithm version 2: 64-bit hash result optimized for 64-bit processors

HA_MURMUR_2_64A: Murmur algorithm version 2: 64-bit hash result optimized for 64-bit processors

Versions 24 and later HA_MURMUR_2_64B: Murmur algorithm version 2: 64-bit hash result optimized for 32-bit processors

New in version 24 HA_MURMUR_2_64B: Murmur algorithm version 2: 64-bit hash result optimized for 32-bit processors

HA_MURMUR_2_64B: Murmur algorithm version 2: 64-bit hash result optimized for 32-bit processors

Versions 24 and later HA_MURMUR_2_A: Incremental Murmur algorithm version 2: 32-bit hash result

New in version 24 HA_MURMUR_2_A: Incremental Murmur algorithm version 2: 32-bit hash result

HA_MURMUR_2_A: Incremental Murmur algorithm version 2: 32-bit hash result

Versions 24 and later HA_MURMUR_2_BIG_ENDIAN: Murmur algorithm version 2 for big-endian machine: 32-bit hash result

New in version 24 HA_MURMUR_2_BIG_ENDIAN: Murmur algorithm version 2 for big-endian machine: 32-bit hash result

HA_MURMUR_2_BIG_ENDIAN: Murmur algorithm version 2 for big-endian machine: 32-bit hash result

Versions 24 and later HA_MURMUR_2_ALIGNE: Murmur algorithm version 2 for aligned machine: 32-bit hash result

New in version 24 HA_MURMUR_2_ALIGNE: Murmur algorithm version 2 for aligned machine: 32-bit hash result

HA_MURMUR_2_ALIGNE: Murmur algorithm version 2 for aligned machine: 32-bit hash result

Versions 24 and later HA_MURMUR_3_32: Murmur algorithm version 3: 32-bit hash result

New in version 24 HA_MURMUR_3_32: Murmur algorithm version 3: 32-bit hash result

HA_MURMUR_3_32: Murmur algorithm version 3: 32-bit hash result

Versions 24 and later HA_MURMUR_3_128_X86: Murmur algorithm version 3: 128-bit hash result optimized for 32-bit processors

New in version 24 HA_MURMUR_3_128_X86: Murmur algorithm version 3: 128-bit hash result optimized for 32-bit processors

HA_MURMUR_3_128_X86: Murmur algorithm version 3: 128-bit hash result optimized for 32-bit processors

Versions 24 and later HA_MURMUR_3_128_X64: Murmur algorithm version 3: 128-bit hash result optimized for 64-bit processors

New in version 24 HA_MURMUR_3_128_X64: Murmur algorithm version 3: 128-bit hash result optimized for 64-bit processors

HA_MURMUR_3_128_X64: Murmur algorithm version 3: 128-bit hash result optimized for 64-bit processors

TIGER/WHIRLPOOL algorithms: hash functions with high cryptographic properties optimized for the 64-bit mode (but can also be used in 32-bit mode). MURMUR algorithm: very fast hash functions with no cryptographic properties. This algorithm is used by the "bloom filter" of bitcoin wallets.

<String>: Character string (with quotes)

String on which the calculation will be performed. This parameter can contain binary characters.

<Secret key>: Character string (between quotes) or Integer

Authentication key of message.

If an HMAC algorithm is used, this parameter must be a string.

Versions 24 and later If a MURMUR algorithm is used, the key must be an integer.

New in version 24 If a MURMUR algorithm is used, the key must be an integer.

If a MURMUR algorithm is used, the key must be an integer.

This parameter must not be an empty string.

Remarks

Notes

Two identical character strings will have, for the same type of algorithm, two identical Hashes.

The result of the Hash may contain non-displayable characters. These characters will not be visible when using Info or Trace for example.

HashString and UNICODE

Caution: The Hash functions operate on the bytes found in the character strings. For the same type of algorithm, the result will differ in UNICODE and in ANSI.

Multi-platform development: To use Hash of strings between several platforms (a hash generated in iOS and checked in Android or Windows for example), no Unicode string must be used. Indeed, the Unicode strings do not have the same format according to the platforms. In this case, we advise you to use strings in ANSI or UTF 8 format (and to convert the Unicode strings if necessary).

Availability of algorithms

Algorithms are available depending on the PHP server configuration ('mhash' extension, PHP 5 with native hash function, etc).

[ + ] Using the hashing functions. The HashFile and HashString functions are used to calculate a Hash key for a string or for a file. This Hash key is used to: - Check whether the file is consistent after a transfer for example - Find file duplicates - ...