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trezor-firmware/crypto/cash_addr.h
2019-04-15 19:14:52 +02:00

78 lines
3.3 KiB
C

/* Copyright (c) 2017 Jochen Hoenicke, Pieter Wuille
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef _CASH_ADDR_H_
#define _CASH_ADDR_H_ 1
#include <stdint.h>
/** Encode a Cashaddr address
*
* Out: output: Pointer to a buffer of size 105 + strlen(hrp) that will be
* updated to contain the null-terminated address.
* In: hrp: Pointer to the null-terminated human readable part to use
* (chain/network specific).
* prog: Data bytes for the hash (between 21 and 65 bytes).
* prog_len: Number of data bytes in prog.
* Returns 1 if successful.
*/
int cash_addr_encode(char *output, const char *hrp, const uint8_t *prog,
size_t prog_len);
/** Decode a CashAddr address
*
* Out: prog: Pointer to a buffer of size 65 that will be updated to
* contain the witness program bytes.
* prog_len: Pointer to a size_t that will be updated to contain the
* length of bytes in prog. hrp: Pointer to the null-terminated human
* readable part that is expected (chain/network specific). addr: Pointer to
* the null-terminated address. Returns 1 if successful.
*/
int cash_addr_decode(uint8_t *prog, size_t *prog_len, const char *hrp,
const char *addr);
/** Encode a Cash string
*
* Out: output: Pointer to a buffer of size strlen(hrp) + data_len + 8 that
* will be updated to contain the null-terminated Cash string.
* In: hrp : Pointer to the null-terminated human readable part.
* data : Pointer to an array of 5-bit values.
* data_len: Length of the data array.
* Returns 1 if successful.
*/
int cash_encode(char *output, const char *hrp, const uint8_t *data,
size_t data_len);
/** Decode a Cash string
*
* Out: hrp: Pointer to a buffer of size strlen(input) - 6. Will be
* updated to contain the null-terminated human readable part.
* data: Pointer to a buffer of size strlen(input) - 8 that will
* hold the encoded 5-bit data values.
* data_len: Pointer to a size_t that will be updated to be the number
* of entries in data.
* In: input: Pointer to a null-terminated Cash string.
* Returns 1 if succesful.
*/
int cash_decode(char *hrp, uint8_t *data, size_t *data_len, const char *input);
#endif