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pki: Add ssh_pki_import_signature_blob().

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This commit is contained in:
Andreas Schneider
2011-08-21 11:03:53 +02:00
parent 4f19a304d1
commit a4b2518761
4 changed files with 250 additions and 0 deletions
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60
src/pki.c
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@@ -913,6 +913,66 @@ int ssh_pki_export_signature_blob(const ssh_signature sig,
return SSH_OK;
}
int ssh_pki_import_signature_blob(const ssh_string sig_blob,
const ssh_key pubkey,
ssh_signature *psig)
{
ssh_signature sig;
enum ssh_keytypes_e type;
ssh_string str;
ssh_buffer buf;
char *type_c;
int rc;
if (sig_blob == NULL || psig == NULL) {
return SSH_ERROR;
}
buf = ssh_buffer_new();
if (buf == NULL) {
return SSH_ERROR;
}
rc = buffer_add_data(buf,
ssh_string_data(sig_blob),
ssh_string_len(sig_blob));
if (rc < 0) {
ssh_buffer_free(buf);
return SSH_ERROR;
}
str = buffer_get_ssh_string(buf);
if (str == NULL) {
ssh_buffer_free(buf);
return SSH_ERROR;
}
type_c = ssh_string_to_char(str);
ssh_string_free(str);
if (type_c == NULL) {
ssh_buffer_free(buf);
return SSH_ERROR;
}
type = ssh_key_type_from_name(type_c);
SAFE_FREE(type_c);
str = buffer_get_ssh_string(buf);
ssh_buffer_free(buf);
if (str == NULL) {
return SSH_ERROR;
}
sig = pki_signature_from_blob(pubkey, str, type);
ssh_string_free(str);
if (sig == NULL) {
return SSH_ERROR;
}
*psig = sig;
return SSH_OK;
}
/*
* This function signs the session id (known as H) as a string then
* the content of sigbuf */