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Alow batch ode for gpgsm --gen-key.

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Allow CSR generation using an existing key with gpgsm.
This commit is contained in:
Werner Koch 2009-07-01 18:30:33 +00:00
parent 5505a81a19
commit 1925cb37f9
10 changed files with 197 additions and 34 deletions
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54
common/sexputil.c
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@ -292,14 +292,8 @@ make_canon_sexp_from_rsa_pk (const void *m_arg, size_t mlen,
}
/* Return the so called "keygrip" which is the SHA-1 hash of the
public key parameters expressed in a way depended on the algorithm.
KEY is expected to be an canonical encoded S-expression with a
public or private key. KEYLEN is the length of that buffer.
GRIP must be at least 20 bytes long. On success 0 is returned, on
error an error code. */
/* Return the so parameters of a public RSA key expressed as an
canonical encoded S-expression. */
gpg_error_t
get_rsa_pk_from_canon_sexp (const unsigned char *keydata, size_t keydatalen,
unsigned char const **r_n, size_t *r_nlen,
@ -389,3 +383,47 @@ get_rsa_pk_from_canon_sexp (const unsigned char *keydata, size_t keydatalen,
*r_elen = rsa_e_len;
return 0;
}
/* Return the algo of a public RSA expressed as an canonical encoded
S-expression. On error the algo is set to 0. */
gpg_error_t
get_pk_algo_from_canon_sexp (const unsigned char *keydata, size_t keydatalen,
int *r_algo)
{
gpg_error_t err;
const unsigned char *buf, *tok;
size_t buflen, toklen;
int depth;
*r_algo = 0;
buf = keydata;
buflen = keydatalen;
depth = 0;
if ((err = parse_sexp (&buf, &buflen, &depth, &tok, &toklen)))
return err;
if ((err = parse_sexp (&buf, &buflen, &depth, &tok, &toklen)))
return err;
if (!tok || toklen != 10 || memcmp ("public-key", tok, toklen))
return gpg_error (GPG_ERR_BAD_PUBKEY);
if ((err = parse_sexp (&buf, &buflen, &depth, &tok, &toklen)))
return err;
if ((err = parse_sexp (&buf, &buflen, &depth, &tok, &toklen)))
return err;
if (!tok)
return gpg_error (GPG_ERR_BAD_PUBKEY);
if (toklen == 3 && !memcmp ("rsa", tok, toklen))
*r_algo = GCRY_PK_RSA;
else if (toklen == 3 && !memcmp ("dsa", tok, toklen))
*r_algo = GCRY_PK_DSA;
else if (toklen == 3 && !memcmp ("elg", tok, toklen))
*r_algo = GCRY_PK_ELG;
else if (toklen == 5 && !memcmp ("ecdsa", tok, toklen))
*r_algo = GCRY_PK_ECDSA;
else
return gpg_error (GPG_ERR_PUBKEY_ALGO);
return 0;
}