diff options
Diffstat (limited to 'guile/src/core.c')
| -rw-r--r-- | guile/src/core.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/guile/src/core.c b/guile/src/core.c index 0926dc8a97..b1dad0777f 100644 --- a/guile/src/core.c +++ b/guile/src/core.c @@ -50,6 +50,9 @@ ? alloca (size) \ : scm_gc_malloc_pointerless ((size), "gnutls-alloc")) +/* Maximum size, in bytes, of the hash data returned by a digest algorithm. */ +#define MAX_HASH_SIZE 64 + /* SMOB and enums type definitions. */ #include "enum-map.i.c" #include "smob-types.i.c" @@ -2891,6 +2894,40 @@ SCM_DEFINE (scm_gnutls_x509_certificate_subject_alternative_name, } #undef FUNC_NAME + +SCM_DEFINE (scm_gnutls_x509_certificate_fingerprint, + "x509-certificate-fingerprint", + 2, 0, 0, + (SCM cert, SCM algo), + "Return the fingerprint (a u8vector) of the certificate " + "@var{cert}, computed using the digest algorithm @var{algo}.") +#define FUNC_NAME s_scm_gnutls_x509_certificate_fingerprint +{ + int err; + SCM result; + gnutls_x509_crt_t c_cert; + gnutls_digest_algorithm_t c_algo; + uint8_t c_fpr[MAX_HASH_SIZE]; + size_t c_fpr_len = MAX_HASH_SIZE; + scm_t_array_handle c_handle; + + c_cert = scm_to_gnutls_x509_certificate (cert, 1, FUNC_NAME); + c_algo = scm_to_gnutls_digest (algo, 1, FUNC_NAME); + + err = gnutls_x509_crt_get_fingerprint (c_cert, c_algo, &c_fpr, &c_fpr_len); + if (EXPECT_FALSE (err)) + scm_gnutls_error (err, FUNC_NAME); + + result = scm_make_u8vector (scm_from_uint(c_fpr_len), SCM_INUM0); + scm_array_get_handle (result, &c_handle); + memcpy (scm_array_handle_u8_writable_elements (&c_handle), &c_fpr, + c_fpr_len); + scm_array_handle_release (&c_handle); + + return result; +} + +#undef FUNC_NAME /* OpenPGP keys. */ |