RSA_SIGN_ASN1_OCTET_STRING(3)                         Library Functions Manual

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.

     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).

SEE ALSO
     RSA_new(3), RSA_sign(3), RSA_verify(3)

HISTORY
     RSA_sign_ASN1_OCTET_STRING() and RSA_verify_ASN1_OCTET_STRING() first
     appeared in SSLeay 0.8.0 and have been available since OpenBSD 2.4.

BUGS
     These functions serve no recognizable purpose.

Linux 6.8.2-arch2-1              June 10, 2019             Linux 6.8.2-arch2-1