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Diffstat (limited to '')
-rw-r--r-- | comm/third_party/botan/src/lib/asn1/alg_id.cpp | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/lib/asn1/alg_id.cpp b/comm/third_party/botan/src/lib/asn1/alg_id.cpp new file mode 100644 index 0000000000..1e82f29955 --- /dev/null +++ b/comm/third_party/botan/src/lib/asn1/alg_id.cpp @@ -0,0 +1,109 @@ +/* +* Algorithm Identifier +* (C) 1999-2007 Jack Lloyd +* +* Botan is released under the Simplified BSD License (see license.txt) +*/ + +#include <botan/asn1_obj.h> +#include <botan/der_enc.h> +#include <botan/ber_dec.h> +#include <botan/oids.h> + +namespace Botan { + +/* +* Create an AlgorithmIdentifier +*/ +AlgorithmIdentifier::AlgorithmIdentifier(const OID& alg_id, + const std::vector<uint8_t>& param) : + oid(alg_id), + parameters(param) + {} + +/* +* Create an AlgorithmIdentifier +*/ +AlgorithmIdentifier::AlgorithmIdentifier(const std::string& alg_id, + const std::vector<uint8_t>& param) : + AlgorithmIdentifier(OID::from_string(alg_id), param) + {} + +/* +* Create an AlgorithmIdentifier +*/ +AlgorithmIdentifier::AlgorithmIdentifier(const OID& alg_id, + Encoding_Option option) : + oid(alg_id), + parameters() + { + const uint8_t DER_NULL[] = { 0x05, 0x00 }; + + if(option == USE_NULL_PARAM) + parameters.assign(DER_NULL, DER_NULL + 2); + } + +/* +* Create an AlgorithmIdentifier +*/ +AlgorithmIdentifier::AlgorithmIdentifier(const std::string& alg_id, + Encoding_Option option) : + oid(OID::from_string(alg_id)), + parameters() + { + const uint8_t DER_NULL[] = { 0x05, 0x00 }; + + if(option == USE_NULL_PARAM) + parameters.assign(DER_NULL, DER_NULL + 2); + } + +bool AlgorithmIdentifier::parameters_are_null() const + { + return (parameters.size() == 2 && (parameters[0] == 0x05) && (parameters[1] == 0x00)); + } + +bool operator==(const AlgorithmIdentifier& a1, const AlgorithmIdentifier& a2) + { + if(a1.get_oid() != a2.get_oid()) + return false; + + /* + * Treat NULL and empty as equivalent + */ + if(a1.parameters_are_null_or_empty() && + a2.parameters_are_null_or_empty()) + { + return true; + } + + return (a1.get_parameters() == a2.get_parameters()); + } + +bool operator!=(const AlgorithmIdentifier& a1, const AlgorithmIdentifier& a2) + { + return !(a1 == a2); + } + +/* +* DER encode an AlgorithmIdentifier +*/ +void AlgorithmIdentifier::encode_into(DER_Encoder& codec) const + { + codec.start_cons(SEQUENCE) + .encode(get_oid()) + .raw_bytes(get_parameters()) + .end_cons(); + } + +/* +* Decode a BER encoded AlgorithmIdentifier +*/ +void AlgorithmIdentifier::decode_from(BER_Decoder& codec) + { + codec.start_cons(SEQUENCE) + .decode(oid) + .raw_bytes(parameters) + .end_cons(); + } + +} |