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Diffstat (limited to 'botan/src/asn1/alg_id.cpp')
-rw-r--r-- | botan/src/asn1/alg_id.cpp | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/botan/src/asn1/alg_id.cpp b/botan/src/asn1/alg_id.cpp new file mode 100644 index 0000000..94709ba --- /dev/null +++ b/botan/src/asn1/alg_id.cpp @@ -0,0 +1,103 @@ +/* +* Algorithm Identifier +* (C) 1999-2007 Jack Lloyd +* +* Distributed under the terms of the Botan license +*/ + +#include <botan/alg_id.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 MemoryRegion<byte>& param) + { + oid = alg_id; + parameters = param; + } + +/* +* Create an AlgorithmIdentifier +*/ +AlgorithmIdentifier::AlgorithmIdentifier(const std::string& alg_id, + const MemoryRegion<byte>& param) + { + oid = OIDS::lookup(alg_id); + parameters = param; + } + +/* +* Create an AlgorithmIdentifier +*/ +AlgorithmIdentifier::AlgorithmIdentifier(const OID& alg_id, + Encoding_Option option) + { + const byte DER_NULL[] = { 0x05, 0x00 }; + + oid = alg_id; + if(option == USE_NULL_PARAM) + parameters.append(DER_NULL, sizeof(DER_NULL)); + } + +/* +* Create an AlgorithmIdentifier +*/ +AlgorithmIdentifier::AlgorithmIdentifier(const std::string& alg_id, + Encoding_Option option) + { + const byte DER_NULL[] = { 0x05, 0x00 }; + + oid = OIDS::lookup(alg_id); + if(option == USE_NULL_PARAM) + parameters.append(DER_NULL, sizeof(DER_NULL)); + } + +/* +* Compare two AlgorithmIdentifiers +*/ +bool operator==(const AlgorithmIdentifier& a1, const AlgorithmIdentifier& a2) + { + if(a1.oid != a2.oid) + return false; + if(a1.parameters != a2.parameters) + return false; + return true; + } + +/* +* Compare two AlgorithmIdentifiers +*/ +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(oid) + .raw_bytes(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(); + } + +} |