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Support for sk-ecdsa-sha2-nistp256 and sk-ssh-ed25519 keys, FIDO (#698)

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Notes:
Add support for sk-ecdsa-sha2-nistp256@openssh.com and sk-ssh-ed25519@openssh.com key exchange for FIDO auth using the OpenSSL backend. Stub API for other backends.

Credit:
Michael Buckley
This commit is contained in:
Michael Buckley
2022-09-29 09:05:34 -07:00
committed by GitHub
parent ef292424bb
commit ed439a29bb
16 changed files with 1380 additions and 29 deletions
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56
src/crypto.h
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@@ -147,12 +147,23 @@ _libssh2_ecdsa_curve_name_with_octal_new(libssh2_ecdsa_ctx ** ecdsactx,
const unsigned char *k,
size_t k_len,
libssh2_curve_type type);
int
_libssh2_ecdsa_new_private(libssh2_ecdsa_ctx ** ec_ctx,
LIBSSH2_SESSION * session,
const char *filename,
unsigned const char *passphrase);
int
_libssh2_ecdsa_new_private_sk(libssh2_ecdsa_ctx ** ec_ctx,
unsigned char *flags,
const char **application,
const unsigned char **key_handle,
size_t *handle_len,
LIBSSH2_SESSION * session,
const char *filename,
unsigned const char *passphrase);
int
_libssh2_ecdsa_verify(libssh2_ecdsa_ctx * ctx,
const unsigned char *r, size_t r_len,
@@ -182,6 +193,16 @@ int _libssh2_ecdsa_new_private_frommemory(libssh2_ecdsa_ctx ** ec_ctx,
size_t filedata_len,
unsigned const char *passphrase);
int _libssh2_ecdsa_new_private_frommemory_sk(libssh2_ecdsa_ctx ** ec_ctx,
unsigned char *flags,
const char **application,
const unsigned char **key_handle,
size_t *handle_len,
LIBSSH2_SESSION * session,
const char *filedata,
size_t filedata_len,
unsigned const char *passphrase);
libssh2_curve_type
_libssh2_ecdsa_get_curve_type(libssh2_ecdsa_ctx *ec_ctx);
@@ -211,6 +232,16 @@ _libssh2_ed25519_new_private(libssh2_ed25519_ctx **ed_ctx,
LIBSSH2_SESSION *session,
const char *filename, const uint8_t *passphrase);
int
_libssh2_ed25519_new_private_sk(libssh2_ed25519_ctx **ed_ctx,
unsigned char *flags,
const char **application,
const unsigned char **key_handle,
size_t *handle_len,
LIBSSH2_SESSION *session,
const char *filename,
const uint8_t *passphrase);
int
_libssh2_ed25519_new_public(libssh2_ed25519_ctx **ed_ctx,
LIBSSH2_SESSION *session,
@@ -229,6 +260,17 @@ _libssh2_ed25519_new_private_frommemory(libssh2_ed25519_ctx **ed_ctx,
size_t filedata_len,
unsigned const char *passphrase);
int
_libssh2_ed25519_new_private_frommemory_sk(libssh2_ed25519_ctx **ed_ctx,
unsigned char *flags,
const char **application,
const unsigned char **key_handle,
size_t *handle_len,
LIBSSH2_SESSION *session,
const char *filedata,
size_t filedata_len,
unsigned const char *passphrase);
#endif /* LIBSSH2_ED25519 */
@@ -259,6 +301,20 @@ int _libssh2_pub_priv_keyfilememory(LIBSSH2_SESSION *session,
const char *passphrase);
int _libssh2_sk_pub_keyfilememory(LIBSSH2_SESSION *session,
unsigned char **method,
size_t *method_len,
unsigned char **pubkeydata,
size_t *pubkeydata_len,
int *algorithm,
unsigned char *flags,
const char **application,
const unsigned char **key_handle,
size_t *handle_len,
const char *privatekeydata,
size_t privatekeydata_len,
const char *passphrase);
/**
* @function _libssh2_supported_key_sign_algorithms
* @abstract Returns supported algorithms used for upgrading public