| /* Copyright (c) 2020, Google Inc. |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ |
| |
| #ifndef OPENSSL_HEADER_EC_EXTRA_INTERNAL_H |
| #define OPENSSL_HEADER_EC_EXTRA_INTERNAL_H |
| |
| #include <openssl/ec.h> |
| |
| #include "../fipsmodule/ec/internal.h" |
| |
| #if defined(__cplusplus) |
| extern "C" { |
| #endif |
| |
| |
| // Hash-to-curve. |
| // |
| // Internal |EC_JACOBIAN| versions of the corresponding public APIs. |
| |
| // ec_hash_to_curve_p256_xmd_sha256_sswu hashes |msg| to a point on |group| and |
| // writes the result to |out|, implementing the P256_XMD:SHA-256_SSWU_RO_ suite |
| // from draft-irtf-cfrg-hash-to-curve-16. It returns one on success and zero on |
| // error. |
| OPENSSL_EXPORT int ec_hash_to_curve_p256_xmd_sha256_sswu( |
| const EC_GROUP *group, EC_JACOBIAN *out, const uint8_t *dst, size_t dst_len, |
| const uint8_t *msg, size_t msg_len); |
| |
| // ec_hash_to_curve_p384_xmd_sha384_sswu hashes |msg| to a point on |group| and |
| // writes the result to |out|, implementing the P384_XMD:SHA-384_SSWU_RO_ suite |
| // from draft-irtf-cfrg-hash-to-curve-16. It returns one on success and zero on |
| // error. |
| OPENSSL_EXPORT int ec_hash_to_curve_p384_xmd_sha384_sswu( |
| const EC_GROUP *group, EC_JACOBIAN *out, const uint8_t *dst, size_t dst_len, |
| const uint8_t *msg, size_t msg_len); |
| |
| // ec_hash_to_scalar_p384_xmd_sha384 hashes |msg| to a scalar on |group| |
| // and writes the result to |out|, using the hash_to_field operation from the |
| // P384_XMD:SHA-384_SSWU_RO_ suite from draft-irtf-cfrg-hash-to-curve-16, but |
| // generating a value modulo the group order rather than a field element. |
| OPENSSL_EXPORT int ec_hash_to_scalar_p384_xmd_sha384( |
| const EC_GROUP *group, EC_SCALAR *out, const uint8_t *dst, size_t dst_len, |
| const uint8_t *msg, size_t msg_len); |
| |
| // ec_hash_to_curve_p384_xmd_sha512_sswu_draft07 hashes |msg| to a point on |
| // |group| and writes the result to |out|, implementing the |
| // P384_XMD:SHA-512_SSWU_RO_ suite from draft-irtf-cfrg-hash-to-curve-07. It |
| // returns one on success and zero on error. |
| // |
| // TODO(https://crbug.com/1414562): Migrate this to the final version. |
| OPENSSL_EXPORT int ec_hash_to_curve_p384_xmd_sha512_sswu_draft07( |
| const EC_GROUP *group, EC_JACOBIAN *out, const uint8_t *dst, size_t dst_len, |
| const uint8_t *msg, size_t msg_len); |
| |
| // ec_hash_to_scalar_p384_xmd_sha512_draft07 hashes |msg| to a scalar on |group| |
| // and writes the result to |out|, using the hash_to_field operation from the |
| // P384_XMD:SHA-512_SSWU_RO_ suite from draft-irtf-cfrg-hash-to-curve-07, but |
| // generating a value modulo the group order rather than a field element. |
| // |
| // TODO(https://crbug.com/1414562): Migrate this to the final version. |
| OPENSSL_EXPORT int ec_hash_to_scalar_p384_xmd_sha512_draft07( |
| const EC_GROUP *group, EC_SCALAR *out, const uint8_t *dst, size_t dst_len, |
| const uint8_t *msg, size_t msg_len); |
| |
| |
| #if defined(__cplusplus) |
| } // extern C |
| #endif |
| |
| #endif // OPENSSL_HEADER_EC_EXTRA_INTERNAL_H |