libressl-RSA_sign_ASN1_OCTET_STRING3
Rsa signatures
Usage
Crypto Library (libcrypto, -lcrypto)
#include <openssl/rsa.h>
int
RSA_sign_ASN1_OCTET_STRING(int dummy, unsigned char *m, unsigned int m_len, unsigned char *sigret, unsigned int *siglen, RSA *rsa);
int
RSA_verify_ASN1_OCTET_STRING(int dummy, unsigned char *m, unsigned int m_len, unsigned char *sigbuf, unsigned int siglen, RSA *rsa);
Overview
RSA_sign_ASN1_OCTET_STRING() signs the octet string m of size m_len using the private key rsa represented in DER using PKCS #1 padding. It stores the signature in sigret and the signature size in siglen. sigret must point to RSA_size(rsa) bytes of memory.
dummy is ignored.
RSA_verify_ASN1_OCTET_STRING() verifies that the signature sigbuf of size siglen is the DER representation of a given octet string m of size m_len. dummy is ignored. rsa is the signer's public key.
Return values
RSA_sign_ASN1_OCTET_STRING() returns 1 on success or 0 otherwise. RSA_verify_ASN1_OCTET_STRING() returns 1 on successful verification or 0 otherwise.
The error codes can be obtained by ERR_get_error(3).