RSAOAEPDecrypt

Carries out the RSA-OAEP decryption scheme.

Syntax

IppStatus ippsRSAOAEPDecrypt(const Ipp8u* pSrc, const Ipp8u* pLabel, int labLen, Ipp8u* pDst, int* pDstLen, IppsRSAState* pCtx, IppHash hushFunc, int hashLen, IppMGF mgfFunc);

Parameters

pSrc	Pointer to the octet ciphertext to be decrypted.
pLabel	Pointer to the optional label to be associated with the message.
labLen	Length of the optional label.
pDst	Pointer to the output octet plaintext message.
pDstLen	Pointer to the length of the decrypted message.
pCtx	Pointer to the properly initialized IppsRSAState context.
hashFunc	Hash function, which meets the General Definition of a Hash Function.
hashLen	Length of the hash function output, in octets.
mgfFunc	Mask generation function (MGF), which meets the definition provided in section User's Implementation of a Mask Generation Function.

Description

This function is declared in the ippcp.h file. The function carries out the RSA-OAEP decryption scheme defined in [PKCS 1.2.1].

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.
ippStsContextMatchErr	Indicates an error condition if the context parameter does not match the operation.
ippStsInvalidCryptoKeyErr	Indicates an error condition if the RSA context has not been properly set up for the operation.
ippStsLengthErr	Indicates an error condition if the input length parameters do not meet any of the following conditions: labLen ≥ 0, hashLen > 0, 2*hashLen + 2 ≥ `N`, where `N` is the length of the RSA modulus in octets.

RSAOAEPDecrypt

Syntax

Parameters

Description

Return Values

See Also