95 lines
2.8 KiB
C
95 lines
2.8 KiB
C
#include <cJSON.h>
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#include <stdint.h>
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#ifndef CRYPTOCONDITIONS_H
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#define CRYPTOCONDITIONS_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct CC;
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struct CCType;
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enum CCTypeId {
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CC_Preimage = 0,
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CC_Prefix = 1,
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CC_Threshold = 2,
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CC_Ed25519 = 4,
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CC_Secp256k1 = 5,
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CC_Eval = 15
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};
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/*
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* Evaliliary verification callback
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*/
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typedef int (*VerifyEval)(struct CC *cond, void *context);
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/*
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* Crypto Condition
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*/
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typedef struct CC {
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struct CCType *type;
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union {
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struct { unsigned char *publicKey, *signature; };
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struct { unsigned char *preimage; size_t preimageLength; };
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struct { long threshold; int size; struct CC **subconditions; };
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struct { unsigned char *prefix; size_t prefixLength; struct CC *subcondition;
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unsigned long maxMessageLength; };
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struct { char method[64]; unsigned char *paramsBin; size_t paramsBinLength; };
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struct { unsigned char fingerprint[32]; uint32_t subtypes; unsigned long cost; };
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};
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} CC;
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/*
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* Crypto Condition Visitor
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*/
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typedef struct CCVisitor {
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int (*visit)(CC *cond, struct CCVisitor visitor);
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const unsigned char *msg;
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size_t msgLength;
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void *context;
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} CCVisitor;
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/*
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* Public methods
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*/
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int cc_isFulfilled(const CC *cond);
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int cc_verify(const struct CC *cond, const unsigned char *msg, size_t msgLength,
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int doHashMessage, const unsigned char *condBin, size_t condBinLength,
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VerifyEval verifyEval, void *evalContext);
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int cc_visit(CC *cond, struct CCVisitor visitor);
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int cc_signTreeEd25519(CC *cond, const unsigned char *privateKey,
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const unsigned char *msg, size_t msgLength);
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int cc_signTreeSecp256k1Msg32(CC *cond, const unsigned char *privateKey, const unsigned char *msg32);
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size_t cc_conditionBinary(const CC *cond, unsigned char *buf);
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size_t cc_fulfillmentBinary(const CC *cond, unsigned char *buf, size_t bufLength);
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static int cc_secp256k1VerifyTreeMsg32(const CC *cond, const unsigned char *msg32);
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struct CC* cc_conditionFromJSON(cJSON *params, unsigned char *err);
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struct CC* cc_conditionFromJSONString(const unsigned char *json, unsigned char *err);
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struct CC* cc_readConditionBinary(unsigned char *cond_bin, size_t cond_bin_len);
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struct CC* cc_readFulfillmentBinary(unsigned char *ffill_bin, size_t ffill_bin_len);
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struct cJSON* cc_conditionToJSON(const CC *cond);
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unsigned char* cc_conditionToJSONString(const CC *cond);
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unsigned char* cc_conditionUri(const CC *cond);
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unsigned char* cc_jsonRPC(unsigned char *request);
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unsigned long cc_getCost(const CC *cond);
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enum CCTypeId cc_typeId(const CC *cond);
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void cc_free(struct CC *cond);
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#ifdef __cplusplus
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}
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#endif
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#endif /* CRYPTOCONDITIONS_H */
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