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/**
* XMSS Parameters
* Descibes a signature method for XMSS, as defined in:
* [1] XMSS: Extended Hash-Based Signatures,
* draft-itrf-cfrg-xmss-hash-based-signatures-06
* Release: July 2016.
* https://datatracker.ietf.org/doc/
* draft-irtf-cfrg-xmss-hash-based-signatures/?include_text=1
*
* (C) 2016 Matthias Gierlings
*
* Botan is released under the Simplified BSD License (see license.txt)
**/
#include <botan/xmss_parameters.h>
namespace Botan {
const std::map<std::string, XMSS_Parameters::xmss_algorithm_t>
XMSS_Parameters::m_oid_name_lut =
{
{ "XMSS_SHA2-256_W16_H10", XMSS_SHA2_256_W16_H10 },
{ "XMSS_SHA2-256_W16_H16", XMSS_SHA2_256_W16_H16 },
{ "XMSS_SHA2-256_W16_H20", XMSS_SHA2_256_W16_H20 },
{ "XMSS_SHA2-512_W16_H10", XMSS_SHA2_512_W16_H10 },
{ "XMSS_SHA2-512_W16_H16", XMSS_SHA2_512_W16_H16 },
{ "XMSS_SHA2-512_W16_H20", XMSS_SHA2_512_W16_H20 }
// { "XMSS_SHAKE128_W16_H10", xmss_algorithm_t::XMSS_SHAKE128_W16_H10 },
// { "XMSS_SHAKE128_W16_H16", xmss_algorithm_t::XMSS_SHAKE128_W16_H16 },
// { "XMSS_SHAKE128_W16_H20", xmss_algorithm_t::XMSS_SHAKE128_W16_H20 },
// { "XMSS_SHAKE256_W16_H10", xmss_algorithm_t::XMSS_SHAKE256_W16_H10 },
// { "XMSS_SHAKE256_W16_H16", xmss_algorithm_t::XMSS_SHAKE256_W16_H16 },
// { "XMSS_SHAKE256_W16_H20", xmss_algorithm_t::XMSS_SHAKE256_W16_H20 }
};
XMSS_Parameters::XMSS_Parameters(const std::string& algo_name)
: XMSS_Parameters(m_oid_name_lut.at(algo_name))
{}
XMSS_Parameters::XMSS_Parameters(xmss_algorithm_t oid)
: m_oid(oid)
{
switch(oid)
{
case XMSS_SHA2_256_W16_H10:
m_element_size = 32;
m_w = 16;
m_len = 67;
m_tree_height = 10;
m_name = "XMSS_SHA2-256_W16_H10";
m_hash_name = "SHA-256";
m_strength = 256;
m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHA2_256_W16;
break;
case XMSS_SHA2_256_W16_H16:
m_element_size = 32;
m_w = 16;
m_len = 67;
m_tree_height = 16;
m_name = "XMSS_SHA2-256_W16_H16";
m_hash_name = "SHA-256";
m_strength = 256;
m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHA2_256_W16;
break;
case XMSS_SHA2_256_W16_H20:
m_element_size = 32;
m_w = 16;
m_len = 67;
m_tree_height = 20;
m_name = "XMSS_SHA2-256_W16_H20";
m_hash_name = "SHA-256";
m_strength = 256;
m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHA2_256_W16;
break;
case XMSS_SHA2_512_W16_H10:
m_element_size = 64;
m_w = 16;
m_len = 131;
m_tree_height = 10;
m_name = "XMSS_SHA2-512_W16_H10";
m_hash_name = "SHA-512";
m_strength = 512;
m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHA2_512_W16;
break;
case XMSS_SHA2_512_W16_H16:
m_element_size = 64;
m_w = 16;
m_len = 131;
m_tree_height = 16;
m_name = "XMSS_SHA2-512_W16_H16";
m_hash_name = "SHA-512";
m_strength = 512;
m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHA2_512_W16;
break;
case XMSS_SHA2_512_W16_H20:
m_element_size = 64;
m_w = 16;
m_len = 131;
m_tree_height = 20;
m_name = "XMSS_SHA2-512_W16_H20";
m_hash_name = "SHA-512";
m_strength = 512;
m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHA2_512_W16;
break;
// FIXME: Uncomment once SHAKE128/256 implementation is available in Botan.
// case XMSS_SHAKE128_W16_H10:
// m_element_size = 32;
// m_w = 16;
// m_len = 67;
// m_tree_height = 10;
// m_name = "XMSS_SHAKE128_W16_H10";
// m_hash_name = "";
// m_strength = 256;
// m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHAKE128_W16;
// BOTAN_ASSERT(false, "XMSS_SHAKE128_W16_H10 not implemented.");
// break;
// case XMSS_SHAKE128_W16_H16:
// m_element_size = 32;
// m_w = 16;
// m_len = 67;
// m_tree_height = 16;
// m_name = "XMSS_SHAKE128_W16_H16";
// m_hash_name = "";
// m_strength = 256;
// m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHAKE128_W16;
// BOTAN_ASSERT(false, "XMSS_SHAKE128_W16_H16 not implemented.");
// break;
// case XMSS_SHAKE128_W16_H20:
// m_element_size = 32;
// m_w = 16;
// m_len = 67;
// m_tree_height = 20;
// m_name = "XMSS_SHAKE128_W16_H20";
// m_hash_name = "";
// m_strength = 256;
// m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHAKE128_W16;
// BOTAN_ASSERT(false, "XMSS_SHAKE128_W16_H20 not implemented.");
// break;
// case XMSS_SHAKE256_W16_H10:
// m_element_size = 64;
// m_w = 16;
// m_len = 131;
// m_tree_height = 10;
// m_name = "XMSS_SHAKE256_W16_H10";
// m_hash_name = "";
// m_strength = 512;
// m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHAKE256_W16;
// BOTAN_ASSERT(false, "XMSS_SHAKE256_W16_H10 not implemented.");
// break;
// case XMSS_SHAKE256_W16_H16:
// m_element_size = 64;
// m_w = 16;
// m_len = 131;
// m_tree_height = 16;
// m_name = "XMSS_SHAKE256_W16_H16";
// m_hash_name = "";
// m_strength = 512;
// m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHAKE256_W16;
// BOTAN_ASSERT(false, "XMSS_SHAKE256_W16_H16 not implemented.");
// break;
// case XMSS_SHAKE256_W16_H20:
// m_element_size = 64;
// m_w = 16;
// m_len = 131;
// m_tree_height = 20;
// m_name = "XMSS_SHAKE256_W16_H20";
// m_hash_name = "";
// m_strength = 512;
// m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHAKE256_W16;
// BOTAN_ASSERT(false, "XMSS_SHAKE256_W16_H20 not implemented.");
// break;
default:
throw Unsupported_Argument(
"Algorithm id does not match any XMSS algorithm id.");
break;
}
}
}
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