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Diffstat (limited to 'crypto/openssh/sshkey.h')
| -rw-r--r-- | crypto/openssh/sshkey.h | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/crypto/openssh/sshkey.h b/crypto/openssh/sshkey.h new file mode 100644 index 0000000..c8d3cdd --- /dev/null +++ b/crypto/openssh/sshkey.h @@ -0,0 +1,229 @@ +/* $OpenBSD: sshkey.h,v 1.9 2015/08/04 05:23:06 djm Exp $ */ + +/* + * Copyright (c) 2000, 2001 Markus Friedl. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +#ifndef SSHKEY_H +#define SSHKEY_H + +#include <sys/types.h> + +#ifdef WITH_OPENSSL +#include <openssl/rsa.h> +#include <openssl/dsa.h> +# ifdef OPENSSL_HAS_ECC +# include <openssl/ec.h> +# else /* OPENSSL_HAS_ECC */ +# define EC_KEY void +# define EC_GROUP void +# define EC_POINT void +# endif /* OPENSSL_HAS_ECC */ +#else /* WITH_OPENSSL */ +# define RSA void +# define DSA void +# define EC_KEY void +# define EC_GROUP void +# define EC_POINT void +#endif /* WITH_OPENSSL */ + +#define SSH_RSA_MINIMUM_MODULUS_SIZE 768 +#define SSH_KEY_MAX_SIGN_DATA_SIZE (1 << 20) + +struct sshbuf; + +/* Key types */ +enum sshkey_types { + KEY_RSA1, + KEY_RSA, + KEY_DSA, + KEY_ECDSA, + KEY_ED25519, + KEY_RSA_CERT, + KEY_DSA_CERT, + KEY_ECDSA_CERT, + KEY_ED25519_CERT, + KEY_UNSPEC +}; + +/* Default fingerprint hash */ +#define SSH_FP_HASH_DEFAULT SSH_DIGEST_SHA256 + +/* Fingerprint representation formats */ +enum sshkey_fp_rep { + SSH_FP_DEFAULT = 0, + SSH_FP_HEX, + SSH_FP_BASE64, + SSH_FP_BUBBLEBABBLE, + SSH_FP_RANDOMART +}; + +/* key is stored in external hardware */ +#define SSHKEY_FLAG_EXT 0x0001 + +#define SSHKEY_CERT_MAX_PRINCIPALS 256 +/* XXX opaquify? */ +struct sshkey_cert { + struct sshbuf *certblob; /* Kept around for use on wire */ + u_int type; /* SSH2_CERT_TYPE_USER or SSH2_CERT_TYPE_HOST */ + u_int64_t serial; + char *key_id; + u_int nprincipals; + char **principals; + u_int64_t valid_after, valid_before; + struct sshbuf *critical; + struct sshbuf *extensions; + struct sshkey *signature_key; +}; + +/* XXX opaquify? */ +struct sshkey { + int type; + int flags; + RSA *rsa; + DSA *dsa; + int ecdsa_nid; /* NID of curve */ + EC_KEY *ecdsa; + u_char *ed25519_sk; + u_char *ed25519_pk; + struct sshkey_cert *cert; +}; + +#define ED25519_SK_SZ crypto_sign_ed25519_SECRETKEYBYTES +#define ED25519_PK_SZ crypto_sign_ed25519_PUBLICKEYBYTES + +struct sshkey *sshkey_new(int); +int sshkey_add_private(struct sshkey *); +struct sshkey *sshkey_new_private(int); +void sshkey_free(struct sshkey *); +int sshkey_demote(const struct sshkey *, struct sshkey **); +int sshkey_equal_public(const struct sshkey *, + const struct sshkey *); +int sshkey_equal(const struct sshkey *, const struct sshkey *); +char *sshkey_fingerprint(const struct sshkey *, + int, enum sshkey_fp_rep); +int sshkey_fingerprint_raw(const struct sshkey *k, + int, u_char **retp, size_t *lenp); +const char *sshkey_type(const struct sshkey *); +const char *sshkey_cert_type(const struct sshkey *); +int sshkey_write(const struct sshkey *, FILE *); +int sshkey_read(struct sshkey *, char **); +u_int sshkey_size(const struct sshkey *); + +int sshkey_generate(int type, u_int bits, struct sshkey **keyp); +int sshkey_from_private(const struct sshkey *, struct sshkey **); +int sshkey_type_from_name(const char *); +int sshkey_is_cert(const struct sshkey *); +int sshkey_type_is_cert(int); +int sshkey_type_plain(int); +int sshkey_to_certified(struct sshkey *); +int sshkey_drop_cert(struct sshkey *); +int sshkey_certify(struct sshkey *, struct sshkey *); +int sshkey_cert_copy(const struct sshkey *, struct sshkey *); +int sshkey_cert_check_authority(const struct sshkey *, int, int, + const char *, const char **); + +int sshkey_ecdsa_nid_from_name(const char *); +int sshkey_curve_name_to_nid(const char *); +const char * sshkey_curve_nid_to_name(int); +u_int sshkey_curve_nid_to_bits(int); +int sshkey_ecdsa_bits_to_nid(int); +int sshkey_ecdsa_key_to_nid(EC_KEY *); +int sshkey_ec_nid_to_hash_alg(int nid); +int sshkey_ec_validate_public(const EC_GROUP *, const EC_POINT *); +int sshkey_ec_validate_private(const EC_KEY *); +const char *sshkey_ssh_name(const struct sshkey *); +const char *sshkey_ssh_name_plain(const struct sshkey *); +int sshkey_names_valid2(const char *, int); +char *key_alg_list(int, int); + +int sshkey_from_blob(const u_char *, size_t, struct sshkey **); +int sshkey_fromb(struct sshbuf *, struct sshkey **); +int sshkey_froms(struct sshbuf *, struct sshkey **); +int sshkey_to_blob(const struct sshkey *, u_char **, size_t *); +int sshkey_to_base64(const struct sshkey *, char **); +int sshkey_putb(const struct sshkey *, struct sshbuf *); +int sshkey_puts(const struct sshkey *, struct sshbuf *); +int sshkey_plain_to_blob(const struct sshkey *, u_char **, size_t *); +int sshkey_putb_plain(const struct sshkey *, struct sshbuf *); + +int sshkey_sign(const struct sshkey *, u_char **, size_t *, + const u_char *, size_t, u_int); +int sshkey_verify(const struct sshkey *, const u_char *, size_t, + const u_char *, size_t, u_int); + +/* for debug */ +void sshkey_dump_ec_point(const EC_GROUP *, const EC_POINT *); +void sshkey_dump_ec_key(const EC_KEY *); + +/* private key parsing and serialisation */ +int sshkey_private_serialize(const struct sshkey *key, struct sshbuf *buf); +int sshkey_private_deserialize(struct sshbuf *buf, struct sshkey **keyp); + +/* private key file format parsing and serialisation */ +int sshkey_private_to_fileblob(struct sshkey *key, struct sshbuf *blob, + const char *passphrase, const char *comment, + int force_new_format, const char *new_format_cipher, int new_format_rounds); +int sshkey_parse_public_rsa1_fileblob(struct sshbuf *blob, + struct sshkey **keyp, char **commentp); +int sshkey_parse_private_fileblob(struct sshbuf *buffer, + const char *passphrase, const char *filename, struct sshkey **keyp, + char **commentp); +int sshkey_parse_private_fileblob_type(struct sshbuf *blob, int type, + const char *passphrase, struct sshkey **keyp, char **commentp); + +#ifdef SSHKEY_INTERNAL +int ssh_rsa_sign(const struct sshkey *key, u_char **sigp, size_t *lenp, + const u_char *data, size_t datalen, u_int compat); +int ssh_rsa_verify(const struct sshkey *key, + const u_char *signature, size_t signaturelen, + const u_char *data, size_t datalen, u_int compat); +int ssh_dss_sign(const struct sshkey *key, u_char **sigp, size_t *lenp, + const u_char *data, size_t datalen, u_int compat); +int ssh_dss_verify(const struct sshkey *key, + const u_char *signature, size_t signaturelen, + const u_char *data, size_t datalen, u_int compat); +int ssh_ecdsa_sign(const struct sshkey *key, u_char **sigp, size_t *lenp, + const u_char *data, size_t datalen, u_int compat); +int ssh_ecdsa_verify(const struct sshkey *key, + const u_char *signature, size_t signaturelen, + const u_char *data, size_t datalen, u_int compat); +int ssh_ed25519_sign(const struct sshkey *key, u_char **sigp, size_t *lenp, + const u_char *data, size_t datalen, u_int compat); +int ssh_ed25519_verify(const struct sshkey *key, + const u_char *signature, size_t signaturelen, + const u_char *data, size_t datalen, u_int compat); +#endif + +#if !defined(WITH_OPENSSL) +# undef RSA +# undef DSA +# undef EC_KEY +# undef EC_GROUP +# undef EC_POINT +#elif !defined(OPENSSL_HAS_ECC) +# undef EC_KEY +# undef EC_GROUP +# undef EC_POINT +#endif + +#endif /* SSHKEY_H */ |
