void ec_point_free(struct ec_point *point);
+/* Weierstrass form curve */
+struct ec_wcurve
+{
+ Bignum a, b, n;
+ struct ec_point G;
+};
+
+/* Montgomery form curve */
+struct ec_mcurve
+{
+ Bignum a, b;
+ struct ec_point G;
+};
+
+/* Edwards form curve */
+struct ec_ecurve
+{
+ Bignum l, d;
+ struct ec_point B;
+};
+
struct ec_curve {
+ enum { EC_WEIERSTRASS, EC_MONTGOMERY, EC_EDWARDS } type;
unsigned int fieldBits;
- Bignum p, a, b, n;
- struct ec_point G;
+ Bignum p;
+ union {
+ struct ec_wcurve w;
+ struct ec_mcurve m;
+ struct ec_ecurve e;
+ };
};
extern unsigned char nistp256_oid[];
extern unsigned char nistp384_oid[];
extern unsigned char nistp521_oid[];
+extern unsigned char curve25519_oid[];
extern int nistp256_oid_len;
extern int nistp384_oid_len;
extern int nistp521_oid_len;
+extern int curve25519_oid_len;
struct ec_curve *ec_p256(void);
struct ec_curve *ec_p384(void);
struct ec_curve *ec_p521(void);
+struct ec_curve *ec_ed25519(void);
+struct ec_curve *ec_curve25519(void);
struct ec_key {
struct ec_point publicKey;
Bignum privateKey;
};
-int makekey(unsigned char *data, int len, struct RSAKey *result,
- unsigned char **keystr, int order);
-int makeprivate(unsigned char *data, int len, struct RSAKey *result);
+struct ec_point *ec_public(const Bignum privateKey, const struct ec_curve *curve);
+
+int makekey(const unsigned char *data, int len, struct RSAKey *result,
+ const unsigned char **keystr, int order);
+int makeprivate(const unsigned char *data, int len, struct RSAKey *result);
int rsaencrypt(unsigned char *data, int length, struct RSAKey *key);
Bignum rsadecrypt(Bignum input, struct RSAKey *key);
void rsasign(unsigned char *data, int length, struct RSAKey *key);
/*
* SSH2 ECDH key exchange functions
*/
-void *ssh_ecdhkex_newkey(struct ec_curve *curve);
+void *ssh_ecdhkex_newkey(const char *name);
void ssh_ecdhkex_freekey(void *key);
char *ssh_ecdhkex_getpublic(void *key, int *len);
Bignum ssh_ecdhkex_getkey(void *key, char *remoteKey, int remoteKeyLen);
};
struct ssh_signkey {
- void *(*newkey) (char *data, int len);
+ void *(*newkey) (const char *data, int len);
void (*freekey) (void *key);
char *(*fmtkey) (void *key);
unsigned char *(*public_blob) (void *key, int *len);
unsigned char *(*private_blob) (void *key, int *len);
- void *(*createkey) (unsigned char *pub_blob, int pub_len,
- unsigned char *priv_blob, int priv_len);
- void *(*openssh_createkey) (unsigned char **blob, int *len);
+ void *(*createkey) (const unsigned char *pub_blob, int pub_len,
+ const unsigned char *priv_blob, int priv_len);
+ void *(*openssh_createkey) (const unsigned char **blob, int *len);
int (*openssh_fmtkey) (void *key, unsigned char *blob, int len);
- int (*pubkey_bits) (void *blob, int len);
+ /* OpenSSH private key blobs, as created by openssh_fmtkey and
+ * consumed by openssh_createkey, always (at least so far...) take
+ * the form of a number of SSH-2 strings / mpints concatenated
+ * end-to-end. Because the new-style OpenSSH private key format
+ * stores those blobs without a containing string wrapper, we need
+ * to know how many strings each one consists of, so that we can
+ * skip over the right number to find the next key in the file.
+ * openssh_private_npieces gives that information. */
+ int openssh_private_npieces;
+ int (*pubkey_bits) (const void *blob, int len);
char *(*fingerprint) (void *key);
- int (*verifysig) (void *key, char *sig, int siglen,
- char *data, int datalen);
- unsigned char *(*sign) (void *key, char *data, int datalen,
+ int (*verifysig) (void *key, const char *sig, int siglen,
+ const char *data, int datalen);
+ unsigned char *(*sign) (void *key, const char *data, int datalen,
int *siglen);
char *name;
char *keytype; /* for host key cache */
extern const struct ssh_kexes ssh_ecdh_kex;
extern const struct ssh_signkey ssh_dss;
extern const struct ssh_signkey ssh_rsa;
+extern const struct ssh_signkey ssh_ecdsa_ed25519;
extern const struct ssh_signkey ssh_ecdsa_nistp256;
extern const struct ssh_signkey ssh_ecdsa_nistp384;
extern const struct ssh_signkey ssh_ecdsa_nistp521;
* authorisation protocol to use at the remote end. The local auth
* details are looked up by calling platform_get_x11_auth.
*/
-extern struct X11Display *x11_setup_display(char *display, Conf *);
+extern struct X11Display *x11_setup_display(const char *display, Conf *);
void x11_free_display(struct X11Display *disp);
struct X11FakeAuth *x11_invent_fake_auth(tree234 *t, int authtype);
void x11_free_fake_auth(struct X11FakeAuth *auth);
void decbn(Bignum n);
extern Bignum Zero, One;
Bignum bignum_from_bytes(const unsigned char *data, int nbytes);
+Bignum bignum_from_bytes_le(const unsigned char *data, int nbytes);
Bignum bignum_random_in_range(const Bignum lower, const Bignum upper);
int ssh1_read_bignum(const unsigned char *data, int len, Bignum * result);
int bignum_bitcount(Bignum bn);
Bignum bignum_lshift(Bignum number, int shift);
int bignum_cmp(Bignum a, Bignum b);
char *bignum_decimal(Bignum x);
+Bignum bignum_from_decimal(const char *decimal);
#ifdef DEBUG
void diagbn(char *prefix, Bignum md);
Bignum dh_find_K(void *, Bignum f);
int loadrsakey(const Filename *filename, struct RSAKey *key,
- char *passphrase, const char **errorstr);
+ const char *passphrase, const char **errorstr);
int rsakey_encrypted(const Filename *filename, char **comment);
int rsakey_pubblob(const Filename *filename, void **blob, int *bloblen,
char **commentptr, const char **errorstr);
int saversakey(const Filename *filename, struct RSAKey *key, char *passphrase);
-extern int base64_decode_atom(char *atom, unsigned char *out);
+extern int base64_decode_atom(const char *atom, unsigned char *out);
extern int base64_lines(int datalen);
-extern void base64_encode_atom(unsigned char *data, int n, char *out);
-extern void base64_encode(FILE *fp, unsigned char *data, int datalen, int cpl);
+extern void base64_encode_atom(const unsigned char *data, int n, char *out);
+extern void base64_encode(FILE *fp, const unsigned char *data, int datalen,
+ int cpl);
/* ssh2_load_userkey can return this as an error */
extern struct ssh2_userkey ssh2_wrong_passphrase;
int ssh2_userkey_encrypted(const Filename *filename, char **comment);
struct ssh2_userkey *ssh2_load_userkey(const Filename *filename,
- char *passphrase, const char **errorstr);
+ const char *passphrase,
+ const char **errorstr);
unsigned char *ssh2_userkey_loadpub(const Filename *filename, char **algorithm,
int *pub_blob_len, char **commentptr,
const char **errorstr);
int ssh2_save_userkey(const Filename *filename, struct ssh2_userkey *key,
char *passphrase);
const struct ssh_signkey *find_pubkey_alg(const char *name);
+const struct ssh_signkey *find_pubkey_alg_len(int namelen, const char *name);
enum {
SSH_KEYTYPE_UNOPENABLE,
SSH_KEYTYPE_UNKNOWN,
SSH_KEYTYPE_SSH1, SSH_KEYTYPE_SSH2,
- SSH_KEYTYPE_OPENSSH, SSH_KEYTYPE_SSHCOM
+ /*
+ * The OpenSSH key types deserve a little explanation. OpenSSH has
+ * two physical formats for private key storage: an old PEM-based
+ * one largely dictated by their use of OpenSSL and full of ASN.1,
+ * and a new one using the same private key formats used over the
+ * wire for talking to ssh-agent. The old format can only support
+ * a subset of the key types, because it needs redesign for each
+ * key type, and after a while they decided to move to the new
+ * format so as not to have to do that.
+ *
+ * On input, key files are identified as either
+ * SSH_KEYTYPE_OPENSSH_PEM or SSH_KEYTYPE_OPENSSH_NEW, describing
+ * accurately which actual format the keys are stored in.
+ *
+ * On output, however, we default to following OpenSSH's own
+ * policy of writing out PEM-style keys for maximum backwards
+ * compatibility if the key type supports it, and otherwise
+ * switching to the new format. So the formats you can select for
+ * output are SSH_KEYTYPE_OPENSSH_NEW (forcing the new format for
+ * any key type), and SSH_KEYTYPE_OPENSSH_AUTO to use the oldest
+ * format supported by whatever key type you're writing out.
+ *
+ * So we have three type codes, but only two of them usable in any
+ * given circumstance. An input key file will never be identified
+ * as AUTO, only PEM or NEW; key export UIs should not be able to
+ * select PEM, only AUTO or NEW.
+ */
+ SSH_KEYTYPE_OPENSSH_AUTO,
+ SSH_KEYTYPE_OPENSSH_PEM,
+ SSH_KEYTYPE_OPENSSH_NEW,
+ SSH_KEYTYPE_SSHCOM,
+ /*
+ * Public-key-only formats, which we still want to be able to read
+ * for various purposes.
+ */
+ SSH_KEYTYPE_SSH1_PUBLIC,
+ SSH_KEYTYPE_SSH2_PUBLIC_RFC4716,
+ SSH_KEYTYPE_SSH2_PUBLIC_OPENSSH
};
+char *ssh1_pubkey_str(struct RSAKey *ssh1key);
+void ssh1_write_pubkey(FILE *fp, struct RSAKey *ssh1key);
+char *ssh2_pubkey_openssh_str(struct ssh2_userkey *key);
+void ssh2_write_pubkey(FILE *fp, const char *comment,
+ const void *v_pub_blob, int pub_len,
+ int keytype);
int key_type(const Filename *filename);
char *key_type_to_str(int type);
void des_decrypt_xdmauth(const unsigned char *key,
unsigned char *blk, int len);
+void openssh_bcrypt(const char *passphrase,
+ const unsigned char *salt, int saltbytes,
+ int rounds, unsigned char *out, int outbytes);
+
/*
* For progress updates in the key generation utility.
*/
void *pfnparam);
int ec_generate(struct ec_key *key, int bits, progfn_t pfn,
void *pfnparam);
+int ec_edgenerate(struct ec_key *key, int bits, progfn_t pfn,
+ void *pfnparam);
Bignum primegen(int bits, int modulus, int residue, Bignum factor,
int phase, progfn_t pfn, void *pfnparam, unsigned firstbits);
void invent_firstbits(unsigned *one, unsigned *two);
#define SSH2_MSG_KEXDH_INIT 30 /* 0x1e */
#define SSH2_MSG_KEXDH_REPLY 31 /* 0x1f */
#define SSH2_MSG_KEX_DH_GEX_REQUEST_OLD 30 /* 0x1e */
-#define SSH2_MSG_KEX_DH_GEX_REQUEST 34 /* 0x1e */
+#define SSH2_MSG_KEX_DH_GEX_REQUEST 34 /* 0x22 */
#define SSH2_MSG_KEX_DH_GEX_GROUP 31 /* 0x1f */
#define SSH2_MSG_KEX_DH_GEX_INIT 32 /* 0x20 */
#define SSH2_MSG_KEX_DH_GEX_REPLY 33 /* 0x21 */