diff options
Diffstat (limited to 'crypto/openssh/sshkey.h')
| -rw-r--r-- | crypto/openssh/sshkey.h | 103 |
1 files changed, 80 insertions, 23 deletions
diff --git a/crypto/openssh/sshkey.h b/crypto/openssh/sshkey.h index f6a007fdff35..6edc6c5a5dbd 100644 --- a/crypto/openssh/sshkey.h +++ b/crypto/openssh/sshkey.h @@ -1,4 +1,4 @@ -/* $OpenBSD: sshkey.h,v 1.30 2018/09/14 04:17:44 djm Exp $ */ +/* $OpenBSD: sshkey.h,v 1.50 2021/07/23 03:37:52 djm Exp $ */ /* * Copyright (c) 2000, 2001 Markus Friedl. All rights reserved. @@ -33,11 +33,13 @@ #include <openssl/dsa.h> # ifdef OPENSSL_HAS_ECC # include <openssl/ec.h> +# include <openssl/ecdsa.h> # else /* OPENSSL_HAS_ECC */ # define EC_KEY void # define EC_GROUP void # define EC_POINT void # endif /* OPENSSL_HAS_ECC */ +#define SSH_OPENSSL_VERSION OpenSSL_version(OPENSSL_VERSION) #else /* WITH_OPENSSL */ # define BIGNUM void # define RSA void @@ -45,6 +47,7 @@ # define EC_KEY void # define EC_GROUP void # define EC_POINT void +#define SSH_OPENSSL_VERSION "without OpenSSL" #endif /* WITH_OPENSSL */ #define SSH_RSA_MINIMUM_MODULUS_SIZE 1024 @@ -64,6 +67,10 @@ enum sshkey_types { KEY_ED25519_CERT, KEY_XMSS, KEY_XMSS_CERT, + KEY_ECDSA_SK, + KEY_ECDSA_SK_CERT, + KEY_ED25519_SK, + KEY_ED25519_SK_CERT, KEY_UNSPEC }; @@ -82,9 +89,17 @@ enum sshkey_fp_rep { /* Private key serialisation formats, used on the wire */ enum sshkey_serialize_rep { SSHKEY_SERIALIZE_DEFAULT = 0, - SSHKEY_SERIALIZE_STATE = 1, - SSHKEY_SERIALIZE_FULL = 2, - SSHKEY_SERIALIZE_INFO = 254, + SSHKEY_SERIALIZE_STATE = 1, /* only state is serialized */ + SSHKEY_SERIALIZE_FULL = 2, /* include keys for saving to disk */ + SSHKEY_SERIALIZE_SHIELD = 3, /* everything, for encrypting in ram */ + SSHKEY_SERIALIZE_INFO = 254, /* minimal information */ +}; + +/* Private key disk formats */ +enum sshkey_private_format { + SSHKEY_PRIVATE_OPENSSH = 0, + SSHKEY_PRIVATE_PEM = 1, + SSHKEY_PRIVATE_PKCS8 = 2, }; /* key is stored in external hardware */ @@ -110,23 +125,45 @@ struct sshkey_cert { struct sshkey { int type; int flags; + /* KEY_RSA */ RSA *rsa; + /* KEY_DSA */ DSA *dsa; + /* KEY_ECDSA and KEY_ECDSA_SK */ int ecdsa_nid; /* NID of curve */ EC_KEY *ecdsa; + /* KEY_ED25519 and KEY_ED25519_SK */ u_char *ed25519_sk; u_char *ed25519_pk; + /* KEY_XMSS */ char *xmss_name; char *xmss_filename; /* for state file updates */ void *xmss_state; /* depends on xmss_name, opaque */ u_char *xmss_sk; u_char *xmss_pk; + /* KEY_ECDSA_SK and KEY_ED25519_SK */ + char *sk_application; + uint8_t sk_flags; + struct sshbuf *sk_key_handle; + struct sshbuf *sk_reserved; + /* Certificates */ struct sshkey_cert *cert; + /* Private key shielding */ + u_char *shielded_private; + size_t shielded_len; + u_char *shield_prekey; + size_t shield_prekey_len; }; #define ED25519_SK_SZ crypto_sign_ed25519_SECRETKEYBYTES #define ED25519_PK_SZ crypto_sign_ed25519_PUBLICKEYBYTES +/* Additional fields contained in signature */ +struct sshkey_sig_details { + uint32_t sk_counter; /* U2F signature counter */ + uint8_t sk_flags; /* U2F signature flags; see ssh-sk.h */ +}; + struct sshkey *sshkey_new(int); void sshkey_free(struct sshkey *); int sshkey_equal_public(const struct sshkey *, @@ -145,25 +182,37 @@ 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_is_shielded(struct sshkey *); +int sshkey_shield_private(struct sshkey *); +int sshkey_unshield_private(struct sshkey *); + int sshkey_type_from_name(const char *); int sshkey_is_cert(const struct sshkey *); +int sshkey_is_sk(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_cert_copy(const struct sshkey *, struct sshkey *); -int sshkey_cert_check_authority(const struct sshkey *, int, int, +int sshkey_cert_check_authority(const struct sshkey *, int, int, int, + uint64_t, const char *, const char **); +int sshkey_cert_check_authority_now(const struct sshkey *, int, int, int, const char *, const char **); +int sshkey_cert_check_host(const struct sshkey *, const char *, + int , const char *, const char **); size_t sshkey_format_cert_validity(const struct sshkey_cert *, char *, size_t) __attribute__((__bounded__(__string__, 2, 3))); int sshkey_check_cert_sigtype(const struct sshkey *, const char *); -int sshkey_certify(struct sshkey *, struct sshkey *, const char *); +int sshkey_certify(struct sshkey *, struct sshkey *, + const char *, const char *, const char *); /* Variant allowing use of a custom signature function (e.g. for ssh-agent) */ -typedef int sshkey_certify_signer(const struct sshkey *, u_char **, size_t *, - const u_char *, size_t, const char *, u_int, void *); +typedef int sshkey_certify_signer(struct sshkey *, u_char **, size_t *, + const u_char *, size_t, const char *, const char *, const char *, + u_int, void *); int sshkey_certify_custom(struct sshkey *, struct sshkey *, const char *, - sshkey_certify_signer *, void *); + const char *, const char *, sshkey_certify_signer *, void *); int sshkey_ecdsa_nid_from_name(const char *); int sshkey_curve_name_to_nid(const char *); @@ -191,47 +240,47 @@ int sshkey_puts_opts(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, const char *, u_int); +int sshkey_sign(struct sshkey *, u_char **, size_t *, + const u_char *, size_t, const char *, const char *, const char *, u_int); int sshkey_verify(const struct sshkey *, const u_char *, size_t, - const u_char *, size_t, const char *, u_int); + const u_char *, size_t, const char *, u_int, struct sshkey_sig_details **); int sshkey_check_sigtype(const u_char *, size_t, const char *); const char *sshkey_sigalg_by_name(const char *); +int sshkey_get_sigtype(const u_char *, size_t, char **); /* 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_serialize_opt(const struct sshkey *key, struct sshbuf *buf, +int sshkey_private_serialize(struct sshkey *key, struct sshbuf *buf); +int sshkey_private_serialize_opt(struct sshkey *key, struct sshbuf *buf, enum sshkey_serialize_rep); 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 format, const char *openssh_format_cipher, int openssh_format_rounds); int sshkey_parse_private_fileblob(struct sshbuf *buffer, const char *passphrase, struct sshkey **keyp, char **commentp); int sshkey_parse_private_fileblob_type(struct sshbuf *blob, int type, const char *passphrase, struct sshkey **keyp, char **commentp); +int sshkey_parse_pubkey_from_private_fileblob_type(struct sshbuf *blob, + int type, struct sshkey **pubkeyp); /* XXX should be internal, but used by ssh-keygen */ int ssh_rsa_complete_crt_parameters(struct sshkey *, const BIGNUM *); /* stateful keys (e.g. XMSS) */ -#ifdef NO_ATTRIBUTE_ON_PROTOTYPE_ARGS -typedef void sshkey_printfn(const char *, ...); -#else -typedef void sshkey_printfn(const char *, ...) __attribute__((format(printf, 1, 2))); -#endif int sshkey_set_filename(struct sshkey *, const char *); int sshkey_enable_maxsign(struct sshkey *, u_int32_t); u_int32_t sshkey_signatures_left(const struct sshkey *); -int sshkey_forward_state(const struct sshkey *, u_int32_t, sshkey_printfn *); -int sshkey_private_serialize_maxsign(const struct sshkey *key, struct sshbuf *buf, - u_int32_t maxsign, sshkey_printfn *pr); +int sshkey_forward_state(const struct sshkey *, u_int32_t, int); +int sshkey_private_serialize_maxsign(struct sshkey *key, + struct sshbuf *buf, u_int32_t maxsign, int); + +void sshkey_sig_details_free(struct sshkey_sig_details *); #ifdef SSHKEY_INTERNAL int ssh_rsa_sign(const struct sshkey *key, @@ -250,11 +299,19 @@ int ssh_ecdsa_sign(const struct sshkey *key, u_char **sigp, size_t *lenp, 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_ecdsa_sk_verify(const struct sshkey *key, + const u_char *signature, size_t signaturelen, + const u_char *data, size_t datalen, u_int compat, + struct sshkey_sig_details **detailsp); 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); +int ssh_ed25519_sk_verify(const struct sshkey *key, + const u_char *signature, size_t signaturelen, + const u_char *data, size_t datalen, u_int compat, + struct sshkey_sig_details **detailsp); int ssh_xmss_sign(const struct sshkey *key, u_char **sigp, size_t *lenp, const u_char *data, size_t datalen, u_int compat); int ssh_xmss_verify(const struct sshkey *key, |