- NAME
- SYNOPSIS
- DESCRIPTION
- RETURN VALUES
- BUGS
- SEE ALSO
- HISTORY

# NAME

RSA_sign_ASN1_OCTET_STRING, RSA_verify_ASN1_OCTET_STRING - RSA signatures

# SYNOPSIS

     #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);

# DESCRIPTION

`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.

The random number generator must be seeded prior to calling RSA_sign_ASN1_OCTET_STRING().

`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, 0 otherwise. `RSA_verify_ASN1_OCTET_STRING()` returns 1 on successful verification, 0 otherwise.

The error codes can be obtained by ERR_get_error.

# BUGS

These functions serve no recognizable purpose.

# SEE ALSO

ERR_get_error, objects, rand, rsa, RSA_sign, RSA_verify

# HISTORY

`RSA_sign_ASN1_OCTET_STRING()` and `RSA_verify_ASN1_OCTET_STRING()` were added in SSLeay 0.8.