NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | RETURNS | SINCE | REPORTING BUGS | COPYRIGHT | SEE ALSO | COLOPHON
gnutls_privkey_sign_hash2(3) gnutls gnutls_privkey_sign_hash2(3)
gnutls_privkey_sign_hash2 - API function
#include <gnutls/abstract.h> int gnutls_privkey_sign_hash2(gnutls_privkey_t signer, gnutls_sign_algorithm_t algo, unsigned int flags, const gnutls_datum_t * hash_data, gnutls_datum_t * signature);
gnutls_privkey_t signer Holds the signer's key gnutls_sign_algorithm_t algo The signature algorithm used unsigned int flags Zero or one of gnutls_privkey_flags_t const gnutls_datum_t * hash_data holds the data to be signed gnutls_datum_t * signature will contain newly allocated signature
This function will sign the given hashed data using the specified signature algorithm. This function is an enhancement of gnutls_privkey_sign_hash(), as it allows utilizing a alternative signature algorithm where possible (e.g, use an RSA key with RSA-PSS). The flags may be GNUTLS_PRIVKEY_SIGN_FLAG_TLS1_RSA. In that case this function will ignore hash_algo and perform a raw PKCS1 signature. Note that this flag is supported since 3.6.9. Note also that, not all algorithm support signing already hashed data. When signing with Ed25519, gnutls_privkey_sign_data2() should be used instead.
On success, GNUTLS_E_SUCCESS (0) is returned, otherwise a negative error value.
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