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Moved recovery interface to libsecp package

This commit is contained in:
Yuriy Glukhov 2018-03-12 16:51:28 +02:00
parent 2986baf484
commit 23d2290bd4
2 changed files with 1 additions and 92 deletions
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91
src/backend_libsecp256k1/ecdsa_recovery_wrapper.nim
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@ -1,91 +0,0 @@
# Nim Eth-keys
# Copyright (c) 2018 Status Research & Development GmbH
# Licensed under either of
#
# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
# * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
#
# at your option. This file may not be copied, modified, or distributed except according to those terms.
# To delete when available in nim-libsecp256k1
# https://github.com/status-im/nim-secp256k1
{.deadCodeElim: on.}
import secp256k1
when defined(windows):
const Lib = "secp256k1.dll"
elif defined(macosx):
const Lib = "libsecp256k1(|.0).dylib"
else:
const Lib = "libsecp256k1.so(|.0)"
when defined(static_secp256k1):
{.pragma: secp, importc, cdecl.}
else:
{.pragma: secp, dynlib: Lib, importc, cdecl.}
type
secp256k1_ecdsa_recoverable_signature* = object
## Opaque data structured that holds a parsed ECDSA signature,
## supporting pubkey recovery.
## The exact representation of data inside is implementation defined and not
## guaranteed to be portable between different platforms or versions. It is
## however guaranteed to be 65 bytes in size, and can be safely copied/moved.
## If you need to convert to a format suitable for storage or transmission, use
## the secp256k1_ecdsa_signature_serialize_* and
## secp256k1_ecdsa_signature_parse_* functions.
## Furthermore, it is guaranteed that identical signatures (including their
## recoverability) will have identical representation, so they can be
## memcmp'ed.
data*: array[65, uint8]
proc secp256k1_ecdsa_sign_recoverable*(
ctx: ptr secp256k1_context;
sig: ptr secp256k1_ecdsa_recoverable_signature;
msg32: ptr cuchar;
seckey: ptr cuchar;
noncefp: secp256k1_nonce_function;
ndata: pointer): cint {.secp.}
## Create a recoverable ECDSA signature.
##
## Returns: 1: signature created
## 0: the nonce generation function failed, or the private key was invalid.
## Args: ctx: pointer to a context object, initialized for signing (cannot be NULL)
## Out: sig: pointer to an array where the signature will be placed (cannot be NULL)
## In: msg32: the 32-byte message hash being signed (cannot be NULL)
## seckey: pointer to a 32-byte secret key (cannot be NULL)
## noncefp:pointer to a nonce generation function. If NULL, secp256k1_nonce_function_default is used
## ndata: pointer to arbitrary data used by the nonce generation function (can be NULL)
##
proc secp256k1_ecdsa_recover*(
ctx: ptr secp256k1_context;
pubkey: ptr secp256k1_pubkey;
sig: ptr secp256k1_ecdsa_recoverable_signature;
msg32: ptr cuchar): cint {.secp.}
## Recover an ECDSA public key from a signature.
##
## Returns: 1: public key successfully recovered (which guarantees a correct signature).
## 0: otherwise.
## Args: ctx: pointer to a context object, initialized for verification (cannot be NULL)
## Out: pubkey: pointer to the recovered public key (cannot be NULL)
## In: sig: pointer to initialized signature that supports pubkey recovery (cannot be NULL)
## msg32: the 32-byte message hash assumed to be signed (cannot be NULL)
##
proc secp256k1_ecdsa_recoverable_signature_serialize_compact*(
ctx: ptr secp256k1_context;
output64: ptr cuchar;
recid: ptr cint;
sig: ptr secp256k1_ecdsa_recoverable_signature): cint {.secp.}
## Serialize an ECDSA signature in compact format (64 bytes + recovery id).
##
## Returns: 1
## Args: ctx: a secp256k1 context object
## Out: output64: a pointer to a 64-byte array of the compact signature (cannot be NULL)
## recid: a pointer to an integer to hold the recovery id (can be NULL).
## In: sig: a pointer to an initialized signature object (cannot be NULL)
##

2
src/backend_libsecp256k1/libsecp256k1.nim
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@ -7,7 +7,7 @@
#
# at your option. This file may not be copied, modified, or distributed except according to those terms.
import ../datatypes, ./ecdsa_recovery_wrapper
import ../datatypes
import secp256k1, keccak_tiny
const SECP256K1_CONTEXT_ALL = SECP256K1_CONTEXT_VERIFY or SECP256K1_CONTEXT_SIGN