Initial commit of BoringSSL for Android.

1 files changed, 377 insertions, 0 deletions

diff --git a/src/include/openssl/dsa.h b/src/include/openssl/dsa.h
new file mode 100644
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+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * 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 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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 OR CONTRIBUTORS 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.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ *
+ * The DSS routines are based on patches supplied by
+ * Steven Schoch <schoch@sheba.arc.nasa.gov>. */
+
+#ifndef OPENSSL_HEADER_DSA_H
+#define OPENSSL_HEADER_DSA_H
+
+#include <openssl/base.h>
+
+#include <openssl/engine.h>
+#include <openssl/ex_data.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+/* DSA contains functions for signing and verifing with the Digital Signature
+ * Algorithm. */
+
+
+/* Allocation and destruction. */
+
+/* DSA_new returns a new, empty DSA object or NULL on error. */
+OPENSSL_EXPORT DSA *DSA_new(void);
+
+/* DSA_new_method acts the same as |DH_new| but takes an explicit |ENGINE|. */
+OPENSSL_EXPORT DSA *DSA_new_method(const ENGINE *engine);
+
+/* DSA_free decrements the reference count of |dsa| and frees it if the
+ * reference count drops to zero. */
+OPENSSL_EXPORT void DSA_free(DSA *dsa);
+
+/* DSA_up_ref increments the reference count of |dsa|. */
+OPENSSL_EXPORT int DSA_up_ref(DSA *dsa);
+
+
+/* Parameter generation. */
+
+/* DSA_generate_parameters_ex generates a set of DSA parameters by following
+ * the procedure given in FIPS 186-4, appendix A.
+ * (http://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.186-4.pdf)
+ *
+ * The larger prime will have a length of |bits| (e.g. 2048). The |seed| value
+ * allows others to generate and verify the same parameters and should be
+ * random input which is kept for reference. If |out_counter| or |out_h| are
+ * not NULL then the counter and h value used in the generation are written to
+ * them.
+ *
+ * The |cb| argument is passed to |BN_generate_prime_ex| and is thus called
+ * during the generation process in order to indicate progress. See the
+ * comments for that function for details. In addition to the calls made by
+ * |BN_generate_prime_ex|, |DSA_generate_parameters_ex| will call it with
+ * |event| equal to 2 and 3 at different stages of the process.
+ *
+ * It returns one on success and zero otherwise. */
+OPENSSL_EXPORT int DSA_generate_parameters_ex(DSA *dsa, unsigned bits,
+                                              const uint8_t *seed,
+                                              size_t seed_len, int *out_counter,
+                                              unsigned long *out_h,
+                                              BN_GENCB *cb);
+
+/* DSAparams_dup returns a freshly allocated |DSA| that contains a copy of the
+ * parameters from |dsa|. It returns NULL on error. */
+OPENSSL_EXPORT DSA *DSAparams_dup(const DSA *dsa);
+
+
+/* Key generation. */
+
+/* DSA_generate_key generates a public/private key pair in |dsa|, which must
+ * already have parameters setup. It returns one on success and zero on
+ * error. */
+OPENSSL_EXPORT int DSA_generate_key(DSA *dsa);
+
+
+/* Signatures. */
+
+/* DSA_SIG contains a DSA signature as a pair of integers. */
+typedef struct DSA_SIG_st {
+  BIGNUM *r, *s;
+} DSA_SIG;
+
+/* DSA_SIG_new returns a freshly allocated, DIG_SIG structure or NULL on error.
+ * Both |r| and |s| in the signature will be NULL. */
+OPENSSL_EXPORT DSA_SIG *DSA_SIG_new(void);
+
+/* DSA_SIG_free frees the contents of |sig| and then frees |sig| itself. */
+OPENSSL_EXPORT void DSA_SIG_free(DSA_SIG *sig);
+
+/* DSA_do_sign returns a signature of the hash in |digest| by the key in |dsa|
+ * and returns an allocated, DSA_SIG structure, or NULL on error. */
+OPENSSL_EXPORT DSA_SIG *DSA_do_sign(const uint8_t *digest, size_t digest_len,
+                                    DSA *dsa);
+
+/* DSA_do_verify verifies that |sig| is a valid signature, by the public key in
+ * |dsa|, of the hash in |digest|. It returns one if so, zero if invalid and -1
+ * on error.
+ *
+ * WARNING: do not use. This function returns -1 for error, 0 for invalid and 1
+ * for valid. However, this is dangerously different to the usual OpenSSL
+ * convention and could be a disaster if a user did |if (DSA_do_verify(...))|.
+ * Because of this, |DSA_check_signature| is a safer version of this.
+ *
+ * TODO(fork): deprecate. */
+OPENSSL_EXPORT int DSA_do_verify(const uint8_t *digest, size_t digest_len,
+                                 DSA_SIG *sig, const DSA *dsa);
+
+/* DSA_do_check_signature sets |*out_valid| to zero. Then it verifies that |sig|
+ * is a valid signature, by the public key in |dsa| of the hash in |digest|
+ * and, if so, it sets |*out_valid| to one.
+ *
+ * It returns one if it was able to verify the signature as valid or invalid,
+ * and zero on error. */
+OPENSSL_EXPORT int DSA_do_check_signature(int *out_valid, const uint8_t *digest,
+                                          size_t digest_len, DSA_SIG *sig,
+                                          const DSA *dsa);
+
+
+/* ASN.1 signatures.
+ *
+ * These functions also perform DSA signature operations, but deal with ASN.1
+ * encoded signatures as opposed to raw |BIGNUM|s. If you don't know what
+ * encoding a DSA signature is in, it's probably ASN.1. */
+
+/* DSA_sign signs |digest| with the key in |dsa| and writes the resulting
+ * signature, in ASN.1 form, to |out_sig| and the length of the signature to
+ * |*out_siglen|. There must be, at least, |DSA_size(dsa)| bytes of space in
+ * |out_sig|. It returns one on success and zero otherwise.
+ *
+ * (The |type| argument is ignored.) */
+OPENSSL_EXPORT int DSA_sign(int type, const uint8_t *digest, size_t digest_len,
+                            uint8_t *out_sig, unsigned int *out_siglen,
+                            DSA *dsa);
+
+/* DSA_verify verifies that |sig| is a valid, ASN.1 signature, by the public
+ * key in |dsa|, of the hash in |digest|. It returns one if so, zero if invalid
+ * and -1 on error.
+ *
+ * (The |type| argument is ignored.)
+ *
+ * WARNING: do not use. This function returns -1 for error, 0 for invalid and 1
+ * for valid. However, this is dangerously different to the usual OpenSSL
+ * convention and could be a disaster if a user did |if (DSA_do_verify(...))|.
+ * Because of this, |DSA_check_signature| is a safer version of this.
+ *
+ * TODO(fork): deprecate. */
+OPENSSL_EXPORT int DSA_verify(int type, const uint8_t *digest,
+                              size_t digest_len, const uint8_t *sig,
+                              size_t sig_len, const DSA *dsa);
+
+/* DSA_check_signature sets |*out_valid| to zero. Then it verifies that |sig|
+ * is a valid, ASN.1 signature, by the public key in |dsa|, of the hash in
+ * |digest|. If so, it sets |*out_valid| to one.
+ *
+ * It returns one if it was able to verify the signature as valid or invalid,
+ * and zero on error. */
+OPENSSL_EXPORT int DSA_check_signature(int *out_valid, const uint8_t *digest,
+                                       size_t digest_len, const uint8_t *sig,
+                                       size_t sig_len, const DSA *dsa);
+
+/* DSA_size returns the size, in bytes, of an ASN.1 encoded, DSA signature
+ * generated by |dsa|. Parameters must already have been setup in |dsa|. */
+OPENSSL_EXPORT int DSA_size(const DSA *dsa);
+
+
+/* ASN.1 encoding. */
+
+/* d2i_DSA_SIG parses an ASN.1, DER-encoded, DSA signature from |len| bytes at
+ * |*inp|. If |out_sig| is not NULL then, on exit, a pointer to the result is
+ * in |*out_sig|. If |*out_sig| is already non-NULL on entry then the result is
+ * written directly into |*out_sig|, otherwise a fresh |DSA_SIG| is allocated.
+ * On successful exit, |*inp| is advanced past the DER structure. It returns
+ * the result or NULL on error. */
+OPENSSL_EXPORT DSA_SIG *d2i_DSA_SIG(DSA_SIG **out_sig, const uint8_t **inp,
+                                    long len);
+
+/* i2d_DSA_SIG marshals |in| to an ASN.1, DER structure. If |outp| is not NULL
+ * then the result is written to |*outp| and |*outp| is advanced just past the
+ * output. It returns the number of bytes in the result, whether written or not,
+ * or a negative value on error. */
+OPENSSL_EXPORT int i2d_DSA_SIG(const DSA_SIG *in, uint8_t **outp);
+
+/* d2i_DSAPublicKey parses an ASN.1, DER-encoded, DSA public key from |len|
+ * bytes at |*inp|. If |out| is not NULL then, on exit, a pointer to the result
+ * is in |*out|. If |*out| is already non-NULL on entry then the result is
+ * written directly into |*out|, otherwise a fresh |DSA| is allocated. On
+ * successful exit, |*inp| is advanced past the DER structure. It returns the
+ * result or NULL on error. */
+OPENSSL_EXPORT DSA *d2i_DSAPublicKey(DSA **out, const uint8_t **inp, long len);
+
+/* i2d_DSAPublicKey marshals a public key from |in| to an ASN.1, DER structure.
+ * If |outp| is not NULL then the result is written to |*outp| and |*outp| is
+ * advanced just past the output. It returns the number of bytes in the result,
+ * whether written or not, or a negative value on error. */
+OPENSSL_EXPORT int i2d_DSAPublicKey(const DSA *in, unsigned char **outp);
+
+/* d2i_DSAPrivateKey parses an ASN.1, DER-encoded, DSA private key from |len|
+ * bytes at |*inp|. If |out| is not NULL then, on exit, a pointer to the result
+ * is in |*out|. If |*out| is already non-NULL on entry then the result is
+ * written directly into |*out|, otherwise a fresh |DSA| is allocated. On
+ * successful exit, |*inp| is advanced past the DER structure. It returns the
+ * result or NULL on error. */
+OPENSSL_EXPORT DSA *d2i_DSAPrivateKey(DSA **out, const uint8_t **inp, long len);
+
+/* i2d_DSAPrivateKey marshals a private key from |in| to an ASN.1, DER structure.
+ * If |outp| is not NULL then the result is written to |*outp| and |*outp| is
+ * advanced just past the output. It returns the number of bytes in the result,
+ * whether written or not, or a negative value on error. */
+OPENSSL_EXPORT int i2d_DSAPrivateKey(const DSA *in, unsigned char **outp);
+
+/* d2i_DSAparams parses ASN.1, DER-encoded, DSA parameters from |len| bytes at
+ * |*inp|. If |out| is not NULL then, on exit, a pointer to the result is in
+ * |*out|. If |*out| is already non-NULL on entry then the result is written
+ * directly into |*out|, otherwise a fresh |DSA| is allocated. On successful
+ * exit, |*inp| is advanced past the DER structure. It returns the result or
+ * NULL on error. */
+OPENSSL_EXPORT DSA *d2i_DSAparams(DSA **out, const uint8_t **inp, long len);
+
+/* i2d_DSAparams marshals DSA parameters from |in| to an ASN.1, DER structure.
+ * If |outp| is not NULL then the result is written to |*outp| and |*outp| is
+ * advanced just past the output. It returns the number of bytes in the result,
+ * whether written or not, or a negative value on error. */
+OPENSSL_EXPORT int i2d_DSAparams(const DSA *in, unsigned char **outp);
+
+
+/* Precomputation. */
+
+/* DSA_sign_setup precomputes the message independent part of the DSA signature
+ * and writes them to |*out_kinv| and |*out_r|. Returns one on success, zero on
+ * error.
+ *
+ * TODO(fork): decide what to do with this. Since making DSA* opaque there's no
+ * way for the user to install them. Also, it forces the DSA* not to be const
+ * when passing to the signing function. */
+OPENSSL_EXPORT int DSA_sign_setup(const DSA *dsa, BN_CTX *ctx,
+                                  BIGNUM **out_kinv, BIGNUM **out_r);
+
+
+/* Conversion. */
+
+/* DSA_dup_DH returns a |DH| constructed from the parameters of |dsa|. This is
+ * sometimes needed when Diffie-Hellman parameters are stored in the form of
+ * DSA parameters. It returns an allocated |DH| on success or NULL on error. */
+OPENSSL_EXPORT DH *DSA_dup_DH(const DSA *dsa);
+
+
+/* ex_data functions.
+ *
+ * These functions are wrappers. See |ex_data.h| for details. */
+
+OPENSSL_EXPORT int DSA_get_ex_new_index(long argl, void *argp,
+                                        CRYPTO_EX_new *new_func,
+                                        CRYPTO_EX_dup *dup_func,
+                                        CRYPTO_EX_free *free_func);
+OPENSSL_EXPORT int DSA_set_ex_data(DSA *d, int idx, void *arg);
+OPENSSL_EXPORT void *DSA_get_ex_data(const DSA *d, int idx);
+
+
+struct dsa_method {
+  struct openssl_method_common_st common;
+
+  void *app_data;
+
+  int (*init)(DSA *dsa);
+  int (*finish)(DSA *dsa);
+
+  DSA_SIG *(*sign)(const uint8_t *digest, size_t digest_len, DSA *dsa);
+
+  int (*sign_setup)(const DSA *dsa, BN_CTX *ctx_in, BIGNUM **kinvp, BIGNUM **rp,
+                    const uint8_t *digest, size_t digest_len);
+
+  int (*verify)(int *out_valid, const uint8_t *digest, size_t digest_len,
+                DSA_SIG *sig, const DSA *dsa);
+
+  /* generate_parameters, if non-NULL, is used to generate DSA parameters. */
+  int (*generate_parameters)(DSA *dsa, unsigned bits, const uint8_t *seed,
+                             size_t seed_len, int *counter_ret,
+                             unsigned long *h_ret, BN_GENCB *cb);
+
+  /* keygen, if non-NULL, is used to generate DSA keys. */
+  int (*keygen)(DSA *dsa);
+};
+
+struct dsa_st {
+  long version;
+  int write_params;
+  BIGNUM *p;
+  BIGNUM *q; /* == 20 */
+  BIGNUM *g;
+
+  BIGNUM *pub_key;  /* y public key */
+  BIGNUM *priv_key; /* x private key */
+
+  BIGNUM *kinv; /* Signing pre-calc */
+  BIGNUM *r;    /* Signing pre-calc */
+
+  int flags;
+  /* Normally used to cache montgomery values */
+  BN_MONT_CTX *method_mont_p;
+  int references;
+  CRYPTO_EX_DATA ex_data;
+  DSA_METHOD *meth;
+  /* functional reference if 'meth' is ENGINE-provided */
+  ENGINE *engine;
+};
+
+
+#if defined(__cplusplus)
+}  /* extern C */
+#endif
+
+#define DSA_F_sign 100
+#define DSA_F_verify 101
+#define DSA_F_dsa_sig_cb 102
+#define DSA_F_DSA_new_method 103
+#define DSA_F_sign_setup 104
+#define DSA_R_NEED_NEW_SETUP_VALUES 100
+#define DSA_R_BAD_Q_VALUE 101
+#define DSA_R_MODULUS_TOO_LARGE 102
+#define DSA_R_MISSING_PARAMETERS 103
+
+#endif  /* OPENSSL_HEADER_DSA_H */