25#include "libssh/priv.h"
26#ifdef HAVE_OPENSSL_EC_H
27#include <openssl/ec.h>
29#ifdef HAVE_OPENSSL_ECDSA_H
30#include <openssl/ecdsa.h>
33#include <openssl/evp.h>
35#include "libssh/crypto.h"
39#define ED25519_SIG_LEN 64
41#include "libssh/ed25519.h"
44#define ED25519_KEY_LEN 32
46#define MAX_PUBKEY_SIZE 0x100000
47#define MAX_PRIVKEY_SIZE 0x400000
49#define SSH_KEY_FLAG_EMPTY 0x0
50#define SSH_KEY_FLAG_PUBLIC 0x0001
51#define SSH_KEY_FLAG_PRIVATE 0x0002
52#define SSH_KEY_FLAG_PKCS11_URI 0x0004
54struct ssh_key_struct {
55 enum ssh_keytypes_e type;
59#if defined(HAVE_LIBGCRYPT)
62#elif defined(HAVE_LIBMBEDCRYPTO)
63 mbedtls_pk_context *rsa;
64 mbedtls_ecdsa_context *ecdsa;
65#elif defined(HAVE_LIBCRYPTO)
69 uint8_t *ed25519_pubkey;
70 uint8_t *ed25519_privkey;
73 ed25519_pubkey *ed25519_pubkey;
74 ed25519_privkey *ed25519_privkey;
76 ssh_string sk_application;
78 enum ssh_keytypes_e cert_type;
81struct ssh_signature_struct {
82 enum ssh_keytypes_e type;
83 enum ssh_digest_e hash_type;
85#if defined(HAVE_LIBGCRYPT)
87 gcry_sexp_t ecdsa_sig;
88#elif defined(HAVE_LIBMBEDCRYPTO)
90 struct mbedtls_ecdsa_sig ecdsa_sig;
93 ed25519_signature *ed25519_sig;
102typedef struct ssh_signature_struct *ssh_signature;
113 enum ssh_keytypes_e type);
117 enum ssh_keytypes_e type);
118enum ssh_digest_e ssh_key_hash_from_name(
const char *name);
120#define is_ecdsa_key_type(t) \
121 ((t) >= SSH_KEYTYPE_ECDSA_P256 && (t) <= SSH_KEYTYPE_ECDSA_P521)
123#define is_cert_type(kt)\
124 ((kt) == SSH_KEYTYPE_RSA_CERT01 ||\
125 (kt) == SSH_KEYTYPE_SK_ECDSA_CERT01 ||\
126 (kt) == SSH_KEYTYPE_SK_ED25519_CERT01 ||\
127 ((kt) >= SSH_KEYTYPE_ECDSA_P256_CERT01 &&\
128 (kt) <= SSH_KEYTYPE_ED25519_CERT01))
131ssh_signature ssh_signature_new(
void);
132void ssh_signature_free(ssh_signature sign);
133#define SSH_SIGNATURE_FREE(x) \
134 do { ssh_signature_free(x); x = NULL; } while(0)
136int ssh_pki_export_signature_blob(
const ssh_signature sign,
137 ssh_string *sign_blob);
138int ssh_pki_import_signature_blob(
const ssh_string sig_blob,
139 const ssh_key pubkey,
140 ssh_signature *psig);
141int ssh_pki_signature_verify(ssh_session session,
144 const unsigned char *digest,
148int ssh_pki_export_pubkey_blob(
const ssh_key key,
150int ssh_pki_import_pubkey_blob(
const ssh_string key_blob,
153int ssh_pki_import_cert_blob(
const ssh_string cert_blob,
157int ssh_pki_export_privkey_blob(
const ssh_key key,
162ssh_string ssh_pki_do_sign(ssh_session session, ssh_buffer sigbuf,
163 const ssh_key privatekey,
enum ssh_digest_e hash_type);
164ssh_string ssh_pki_do_sign_agent(ssh_session session,
165 struct ssh_buffer_struct *buf,
166 const ssh_key pubkey);
167ssh_string ssh_srv_pki_do_sign_sessionid(ssh_session session,
168 const ssh_key privkey,
169 const enum ssh_digest_e digest);
172ssh_public_key ssh_pki_convert_key_to_publickey(
const ssh_key key);
173ssh_private_key ssh_pki_convert_key_to_privatekey(
const ssh_key key);
179int ssh_key_size(ssh_key key);
182#ifdef WITH_PKCS11_URI
183bool ssh_pki_is_uri(
const char *filename);
184char *ssh_pki_export_pub_uri_from_priv_uri(
const char *priv_uri);
enum ssh_digest_e ssh_key_type_to_hash(ssh_session session, enum ssh_keytypes_e type)
Convert a key type to a hash type. This is usually unambiguous for all the key types,...
Definition pki.c:424
enum ssh_keytypes_e ssh_key_type_plain(enum ssh_keytypes_e type)
Get the public key type corresponding to a certificate type.
Definition pki.c:595
enum ssh_keytypes_e ssh_key_type_from_signature_name(const char *name)
Convert a ssh key algorithm name to a ssh key algorithm type.
Definition pki.c:524
int ssh_key_algorithm_allowed(ssh_session session, const char *type)
Checks the given key against the configured allowed public key algorithm types.
Definition pki.c:345
void ssh_key_clean(ssh_key key)
clean up the key and deallocate all existing keys
Definition pki.c:139
const char * ssh_key_get_signature_algorithm(ssh_session session, enum ssh_keytypes_e type)
Gets signature algorithm name to be used with the given key type.
Definition pki.c:492
bool ssh_key_size_allowed(ssh_session session, ssh_key key)
Check the given key is acceptable in regards to the key size policy specified by the configuration.
Definition pki.c:399