Merge "Remove libmincrypt."

/*

 * Copyright 2013 The Android Open Source Project

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are met:

 *     * Redistributions of source code must retain the above copyright

 *       notice, this list of conditions and the following disclaimer.

 *     * 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.

 *     * Neither the name of Google Inc. nor the names of its contributors may

 *       be used to endorse or promote products derived from this software

 *       without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY Google Inc. ``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 Google Inc. 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 SYSTEM_CORE_INCLUDE_MINCRYPT_DSA_SIG_H_

#define SYSTEM_CORE_INCLUDE_MINCRYPT_DSA_SIG_H_

#include "mincrypt/p256.h"

#ifdef __cplusplus

extern "C" {

#endif

// Returns 0 if input sig is not a valid ASN.1 sequence

int dsa_sig_unpack(unsigned char* sig, int sig_len, p256_int* r_int, p256_int* s_int);

#ifdef __cplusplus

}

#endif

#endif /* SYSTEM_CORE_INCLUDE_MINCRYPT_DSA_SIG_H_ */

/*

 * Copyright 2007 The Android Open Source Project

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are met:

 *     * Redistributions of source code must retain the above copyright

 *       notice, this list of conditions and the following disclaimer.

 *     * 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.

 *     * Neither the name of Google Inc. nor the names of its contributors may

 *       be used to endorse or promote products derived from this software

 *       without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY Google Inc. ``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 Google Inc. 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 SYSTEM_CORE_INCLUDE_MINCRYPT_HASH_INTERNAL_H_

#define SYSTEM_CORE_INCLUDE_MINCRYPT_HASH_INTERNAL_H_

#include <stdint.h>

#ifdef __cplusplus

extern "C" {

#endif  // __cplusplus

struct HASH_CTX;  // forward decl

typedef struct HASH_VTAB {

  void (* const init)(struct HASH_CTX*);

  void (* const update)(struct HASH_CTX*, const void*, int);

  const uint8_t* (* const final)(struct HASH_CTX*);

  const uint8_t* (* const hash)(const void*, int, uint8_t*);

  int size;

} HASH_VTAB;

typedef struct HASH_CTX {

  const HASH_VTAB * f;

  uint64_t count;

  uint8_t buf[64];

  uint32_t state[8];  // upto SHA2

} HASH_CTX;

#define HASH_init(ctx) (ctx)->f->init(ctx)

#define HASH_update(ctx, data, len) (ctx)->f->update(ctx, data, len)

#define HASH_final(ctx) (ctx)->f->final(ctx)

#define HASH_hash(data, len, digest) (ctx)->f->hash(data, len, digest)

#define HASH_size(ctx) (ctx)->f->size

#ifdef __cplusplus

}

#endif  // __cplusplus

#endif  // SYSTEM_CORE_INCLUDE_MINCRYPT_HASH_INTERNAL_H_

/*

 * Copyright 2013 The Android Open Source Project

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are met:

 *     * Redistributions of source code must retain the above copyright

 *       notice, this list of conditions and the following disclaimer.

 *     * 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.

 *     * Neither the name of Google Inc. nor the names of its contributors may

 *       be used to endorse or promote products derived from this software

 *       without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY Google Inc. ``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 Google Inc. 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 SYSTEM_CORE_INCLUDE_MINCRYPT_LITE_P256_H_

#define SYSTEM_CORE_INCLUDE_MINCRYPT_LITE_P256_H_

// Collection of routines manipulating 256 bit unsigned integers.

// Just enough to implement ecdsa-p256 and related algorithms.

#include <stdint.h>

#ifdef __cplusplus

extern "C" {

#endif

#define P256_BITSPERDIGIT 32

#define P256_NDIGITS 8

#define P256_NBYTES 32

typedef int p256_err;

typedef uint32_t p256_digit;

typedef int32_t p256_sdigit;

typedef uint64_t p256_ddigit;

typedef int64_t p256_sddigit;

// Defining p256_int as struct to leverage struct assigment.

typedef struct {

  p256_digit a[P256_NDIGITS];

} p256_int;

extern const p256_int SECP256r1_n;  // Curve order

extern const p256_int SECP256r1_p;  // Curve prime

extern const p256_int SECP256r1_b;  // Curve param

// Initialize a p256_int to zero.

void p256_init(p256_int* a);

// Clear a p256_int to zero.

void p256_clear(p256_int* a);

// Return bit. Index 0 is least significant.

int p256_get_bit(const p256_int* a, int index);

// b := a % MOD

void p256_mod(

    const p256_int* MOD,

    const p256_int* a,

    p256_int* b);

// c := a * (top_b | b) % MOD

void p256_modmul(

    const p256_int* MOD,

    const p256_int* a,

    const p256_digit top_b,

    const p256_int* b,

    p256_int* c);

// b := 1 / a % MOD

// MOD best be SECP256r1_n

void p256_modinv(

    const p256_int* MOD,

    const p256_int* a,

    p256_int* b);

// b := 1 / a % MOD

// MOD best be SECP256r1_n

// Faster than p256_modinv()

void p256_modinv_vartime(

    const p256_int* MOD,

    const p256_int* a,

    p256_int* b);

// b := a << (n % P256_BITSPERDIGIT)

// Returns the bits shifted out of most significant digit.

p256_digit p256_shl(const p256_int* a, int n, p256_int* b);

// b := a >> (n % P256_BITSPERDIGIT)

void p256_shr(const p256_int* a, int n, p256_int* b);

int p256_is_zero(const p256_int* a);

int p256_is_odd(const p256_int* a);

int p256_is_even(const p256_int* a);

// Returns -1, 0 or 1.

int p256_cmp(const p256_int* a, const p256_int *b);

// c: = a - b

// Returns -1 on borrow.

int p256_sub(const p256_int* a, const p256_int* b, p256_int* c);

// c := a + b

// Returns 1 on carry.

int p256_add(const p256_int* a, const p256_int* b, p256_int* c);

// c := a + (single digit)b

// Returns carry 1 on carry.

int p256_add_d(const p256_int* a, p256_digit b, p256_int* c);

// ec routines.

// {out_x,out_y} := nG

void p256_base_point_mul(const p256_int *n,

                         p256_int *out_x,

                         p256_int *out_y);

// {out_x,out_y} := n{in_x,in_y}

void p256_point_mul(const p256_int *n,

                    const p256_int *in_x,

                    const p256_int *in_y,

                    p256_int *out_x,

                    p256_int *out_y);

// {out_x,out_y} := n1G + n2{in_x,in_y}

void p256_points_mul_vartime(

    const p256_int *n1, const p256_int *n2,

    const p256_int *in_x, const p256_int *in_y,

    p256_int *out_x, p256_int *out_y);

// Return whether point {x,y} is on curve.

int p256_is_valid_point(const p256_int* x, const p256_int* y);

// Outputs big-endian binary form. No leading zero skips.

void p256_to_bin(const p256_int* src, uint8_t dst[P256_NBYTES]);

// Reads from big-endian binary form,

// thus pre-pad with leading zeros if short.

void p256_from_bin(const uint8_t src[P256_NBYTES], p256_int* dst);

#define P256_DIGITS(x) ((x)->a)

#define P256_DIGIT(x,y) ((x)->a[y])

#define P256_ZERO {{0}}

#define P256_ONE {{1}}

#ifdef __cplusplus

}

#endif

#endif  // SYSTEM_CORE_INCLUDE_MINCRYPT_LITE_P256_H_

/*

 * Copyright 2013 The Android Open Source Project

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are met:

 *     * Redistributions of source code must retain the above copyright

 *       notice, this list of conditions and the following disclaimer.

 *     * 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.

 *     * Neither the name of Google Inc. nor the names of its contributors may

 *       be used to endorse or promote products derived from this software

 *       without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY Google Inc. ``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 Google Inc. 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 SYSTEM_CORE_INCLUDE_MINCRYPT_P256_ECDSA_H_

#define SYSTEM_CORE_INCLUDE_MINCRYPT_P256_ECDSA_H_

// Using current directory as relative include path here since

// this code typically gets lifted into a variety of build systems

// and directory structures.

#include "p256.h"

#ifdef __cplusplus

extern "C" {

#endif

// Returns 0 if {r,s} is not a signature on message for

// public key {key_x,key_y}.

//

// Note: message is a p256_int.

// Convert from a binary string using p256_from_bin().

int p256_ecdsa_verify(const p256_int* key_x,

                      const p256_int* key_y,

                      const p256_int* message,

                      const p256_int* r, const p256_int* s);

#ifdef __cplusplus

}

#endif

#endif  // SYSTEM_CORE_INCLUDE_MINCRYPT_P256_ECDSA_H_

/* rsa.h

**

** Copyright 2008, The Android Open Source Project

**

** Redistribution and use in source and binary forms, with or without

** modification, are permitted provided that the following conditions are met:

**     * Redistributions of source code must retain the above copyright

**       notice, this list of conditions and the following disclaimer.

**     * 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.

**     * Neither the name of Google Inc. nor the names of its contributors may

**       be used to endorse or promote products derived from this software

**       without specific prior written permission.

**

** THIS SOFTWARE IS PROVIDED BY Google Inc. ``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 Google Inc. 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 SYSTEM_CORE_INCLUDE_MINCRYPT_RSA_H_

#define SYSTEM_CORE_INCLUDE_MINCRYPT_RSA_H_

#include <inttypes.h>

#ifdef __cplusplus

extern "C" {

#endif

#define RSANUMBYTES 256           /* 2048 bit key length */

#define RSANUMWORDS (RSANUMBYTES / sizeof(uint32_t))

typedef struct RSAPublicKey {

    int len;                  /* Length of n[] in number of uint32_t */

    uint32_t n0inv;           /* -1 / n[0] mod 2^32 */

    uint32_t n[RSANUMWORDS];  /* modulus as little endian array */

    uint32_t rr[RSANUMWORDS]; /* R^2 as little endian array */

    int exponent;             /* 3 or 65537 */

} RSAPublicKey;

int RSA_verify(const RSAPublicKey *key,

               const uint8_t* signature,

               const int len,

               const uint8_t* hash,

               const int hash_len);

#ifdef __cplusplus

}

#endif

#endif // SYSTEM_CORE_INCLUDE_MINCRYPT_RSA_H_