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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>
#include <botan/exceptn.h>
namespace Botan {
//static
XMSS_Parameters::xmss_algorithm_t XMSS_Parameters::xmss_id_from_string(const std::string& param_set)
{
if(param_set == "XMSS_SHA2-256_W16_H10")
return XMSS_SHA2_256_W16_H10;
if(param_set == "XMSS_SHA2-256_W16_H16")
return XMSS_SHA2_256_W16_H16;
if(param_set == "XMSS_SHA2-256_W16_H20")
return XMSS_SHA2_256_W16_H20;
if(param_set == "XMSS_SHA2-512_W16_H10")
return XMSS_SHA2_512_W16_H10;
if(param_set == "XMSS_SHA2-512_W16_H16")
return XMSS_SHA2_512_W16_H16;
if(param_set == "XMSS_SHA2-512_W16_H20")
return XMSS_SHA2_512_W16_H20;
if(param_set == "XMSS_SHAKE128_W16_H10")
return XMSS_SHAKE128_W16_H10;
if(param_set == "XMSS_SHAKE128_W16_H16")
return XMSS_SHAKE128_W16_H16;
if(param_set == "XMSS_SHAKE128_W16_H20")
return XMSS_SHAKE128_W16_H20;
if(param_set == "XMSS_SHAKE256_W16_H10")
return XMSS_SHAKE256_W16_H10;
if(param_set == "XMSS_SHAKE256_W16_H16")
return XMSS_SHAKE256_W16_H16;
if(param_set == "XMSS_SHAKE256_W16_H20")
return XMSS_SHAKE256_W16_H20;
throw Lookup_Error("Unknown XMSS algorithm param '" + param_set + "'");
}
XMSS_Parameters::XMSS_Parameters(const std::string& param_set)
: XMSS_Parameters(XMSS_Parameters::xmss_id_from_string(param_set))
{
}
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;
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 = "SHAKE-128(256)";
m_strength = 256;
m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHAKE128_W16;
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 = "SHAKE-128(256)";
m_strength = 256;
m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHAKE128_W16;
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 = "SHAKE-128(256)";
m_strength = 256;
m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHAKE128_W16;
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 = "SHAKE-256(512)";
m_strength = 512;
m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHAKE256_W16;
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 = "SHAKE-256(512)";
m_strength = 512;
m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHAKE256_W16;
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 = "SHAKE-256(512)";
m_strength = 512;
m_wots_oid = XMSS_WOTS_Parameters::ots_algorithm_t::WOTSP_SHAKE256_W16;
break;
default:
throw Unsupported_Argument(
"Algorithm id does not match any XMSS algorithm id.");
break;
}
}
}
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