Visible to Intel only — GUID: GUID-4228FA35-BB31-4577-A900-A8A6EEB5FAEC
Visible to Intel only — GUID: GUID-4228FA35-BB31-4577-A900-A8A6EEB5FAEC
RSAEncrypt_PKCSv15
Performs RSA-OAEP encryption using the RSA-OAEP scheme as defined in the v1.5 version of the PKCS#1 standard (deprecated).
Syntax
IppStatus ippsRSAEncrypt_PKCSv15 (const Ipp8u* pSrc, int srcLen, const Ipp8u* pRandPS, Ipp8u* pDst, const IppsRSAPublicKeyState* pKey, Ipp8u* pBuffer);
Include Files
ippcp.h
Parameters
pSrc |
Pointer to the input octet message to be encrypted. |
srcLen |
Length (in bytes) of the message. The message can be empty, that is, srcLen==0. |
pRandPS |
Pointer to the non-zero octet padding string. pRandPS can be NULL. In this case, the function applies the padding string of 0xFF bytes. |
pDst |
Pointer to the output message. |
pKey |
Pointer to the properly initialized IppsRSAPublicKeyState context. |
pBuffer |
Pointer to a buffer of size not less than returned by the RSA_GetBufferSizePublicKey function. |
Description
The function performs encryption using the RSA-OAEP scheme according to the v1.5 version of the PKCS#1 standard, defined in PKCS 1.2.1. The length of the encrypted message is equal to size of the RSA modulus n.
If RSAEncrypt_PKCSv15 receives a non-zero pRandPS pointer, the function assumes that the length of the padding string is at least k-srcLen-3 bytes, where k is the length of the RSA modulus in bytes.
Important
The v1.5 version of the PKCS#1 standard requires that you provide a padding string that does not contain zero bytes. If the padding string contains a zero byte, the encryption operation completes successfully, but the inverse decryption fails.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 other than pRandPS is NULL. |
ippStsContextMatchErr |
Indicates an error condition if the RSA context parameter does not match the operation. |
ippStsIncompleteContextErr |
Indicates an error condition if the public key is not set up. |
ippStsSizeErr |
Indicates an error condition if any input/output length parameters are inconsistent with one another. |
Related Information