diff options
Diffstat (limited to 'comm/third_party/botan/src/lib/kdf/kdf1_iso18033')
3 files changed, 88 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/lib/kdf/kdf1_iso18033/info.txt b/comm/third_party/botan/src/lib/kdf/kdf1_iso18033/info.txt new file mode 100644 index 0000000000..494b8358b0 --- /dev/null +++ b/comm/third_party/botan/src/lib/kdf/kdf1_iso18033/info.txt @@ -0,0 +1,7 @@ +<defines> +KDF1_18033 -> 20160128 +</defines> + +<requires> +hash +</requires> diff --git a/comm/third_party/botan/src/lib/kdf/kdf1_iso18033/kdf1_iso18033.cpp b/comm/third_party/botan/src/lib/kdf/kdf1_iso18033/kdf1_iso18033.cpp new file mode 100644 index 0000000000..c7699d2f25 --- /dev/null +++ b/comm/third_party/botan/src/lib/kdf/kdf1_iso18033/kdf1_iso18033.cpp @@ -0,0 +1,38 @@ +/* +* KDF1 from ISO 18033-2 +* (C) 2016 Philipp Weber +* +* Botan is released under the Simplified BSD License (see license.txt) +*/ + +#include <botan/kdf1_iso18033.h> + +namespace Botan { + +size_t KDF1_18033::kdf(uint8_t key[], size_t key_len, + const uint8_t secret[], size_t secret_len, + const uint8_t salt[], size_t salt_len, + const uint8_t label[], size_t label_len) const + { + uint32_t counter = 0; + secure_vector<uint8_t> h; + + size_t offset = 0; + while(offset != key_len && counter != 0xFFFFFFFF) + { + m_hash->update(secret, secret_len); + m_hash->update_be(counter++); + m_hash->update(label, label_len); + m_hash->update(salt, salt_len); + m_hash->final(h); + + const size_t added = std::min(h.size(), key_len - offset); + copy_mem(&key[offset], h.data(), added); + offset += added; + } + + // FIXME: returns truncated output + return offset; + } + +} diff --git a/comm/third_party/botan/src/lib/kdf/kdf1_iso18033/kdf1_iso18033.h b/comm/third_party/botan/src/lib/kdf/kdf1_iso18033/kdf1_iso18033.h new file mode 100644 index 0000000000..5f913057e1 --- /dev/null +++ b/comm/third_party/botan/src/lib/kdf/kdf1_iso18033/kdf1_iso18033.h @@ -0,0 +1,43 @@ +/* +* KDF1 from ISO 18033-2 +* (C) 2016 Philipp Weber +* +* Botan is released under the Simplified BSD License (see license.txt) +*/ + +#ifndef BOTAN_KDF1_18033_H_ +#define BOTAN_KDF1_18033_H_ + +#include <botan/kdf.h> +#include <botan/hash.h> + +BOTAN_FUTURE_INTERNAL_HEADER(kdf1_iso18033.h) + +namespace Botan { + +/** +* KDF1, from ISO 18033-2 +*/ +class BOTAN_PUBLIC_API(2,0) KDF1_18033 final : public KDF + { + public: + std::string name() const override { return "KDF1-18033(" + m_hash->name() + ")"; } + + KDF* clone() const override { return new KDF1_18033(m_hash->clone()); } + + size_t kdf(uint8_t key[], size_t key_len, + const uint8_t secret[], size_t secret_len, + const uint8_t salt[], size_t salt_len, + const uint8_t label[], size_t label_len) const override; + + /** + * @param h hash function to use + */ + explicit KDF1_18033(HashFunction* h) : m_hash(h) {} + private: + std::unique_ptr<HashFunction> m_hash; + }; + +} + +#endif |