RSA_sign_ASN1_OCTET_STRING 3 2003-07-24 0.9.9-dev OpenSSL

### NAME

RSA_sign_ASN1_OCTET_STRING, RSA_verify_ASN1_OCTET_STRING - RSA signatures

### LIBRARY

libcrypto, -lcrypto

### SYNOPSIS

     #include

     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(3).

### BUGS

These functions serve no recognizable purpose.

### SEE ALSO

ERR_get_error(3), objects(3), openssl_rand(3), openssl_rsa(3), RSA_sign(3), RSA_verify(3)

### HISTORY

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