Cryptography for Intel(R) Integrated Performance Primitives Developer Reference

ID 768738
Date 12/16/2022
Public

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MD5GetTag

Computes the current MD5 digest value of the processed part of the message (deprecated).

Syntax

IppStatus ippsMD5GetTag(Ipp8u* pTag, Ipp32u tagLen, const IppsMD5State* pCtx);

Include Files

ippcp.h

Parameters

pTag

Pointer to the authentication tag.

tagLen

Length of the tag (in bytes).

pCtx

Pointer to the IppsMD5State context.
Description
NOTE:

This algorithm is considered weak due to known attacks on it. The functionality remains in the library, but the implementation will no longer be optimized and no security patches will be applied.

The function computes the message digest based on the current context as specified in [FIPS PUB 180-2] and [RFC 1321]. A call to this function retains the possibility to update the digest.

Return Values

ippStsNoErr

Indicates no error. Any other value indicates an error or warning.

ippStsNullPtrErr

Indicates an error condition if any of the specified pointers is NULL.

ippStsLengthErr

Indicates an error condition if tagLen < 1 or tagLen exceeds the maximal length of a particular digest.

ippStsContextMatchErr

Indicates an error condition if the context parameter does not match the operation.

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