SCT_SOURCE_OCSP_STAPLED_RESPONSE
} sct_source_t;
+typedef enum {
+ SCT_VALIDATION_STATUS_NOT_SET,
+ SCT_VALIDATION_STATUS_UNKNOWN_LOG,
+ SCT_VALIDATION_STATUS_VALID,
+ SCT_VALIDATION_STATUS_INVALID,
+ SCT_VALIDATION_STATUS_UNVERIFIED,
+ SCT_VALIDATION_STATUS_UNKNOWN_VERSION
+} sct_validation_status_t;
+
DEFINE_STACK_OF(SCT)
DEFINE_STACK_OF(CTLOG)
+/******************************************
+ * CT policy evaluation context functions *
+ ******************************************/
+
+/* Creates a new, empty policy evaluation context */
+CT_POLICY_EVAL_CTX *CT_POLICY_EVAL_CTX_new(void);
+
+/* Deletes a policy evaluation context */
+void CT_POLICY_EVAL_CTX_free(CT_POLICY_EVAL_CTX *ctx);
+
+/* Gets the peer certificate that the SCTs are for */
+X509* CT_POLICY_EVAL_CTX_get0_cert(CT_POLICY_EVAL_CTX *ctx);
+
+/* Sets the certificate associated with the received SCTs */
+void CT_POLICY_EVAL_CTX_set0_cert(CT_POLICY_EVAL_CTX *ctx, X509 *cert);
+
+/* Gets the issuer of the aforementioned certificate */
+X509* CT_POLICY_EVAL_CTX_get0_issuer(CT_POLICY_EVAL_CTX *ctx);
+
+/* Sets the issuer of the certificate associated with the received SCTs */
+void CT_POLICY_EVAL_CTX_set0_issuer(CT_POLICY_EVAL_CTX *ctx, X509 *issuer);
+
+/* Gets the CT logs that are trusted sources of SCTs */
+CTLOG_STORE *CT_POLICY_EVAL_CTX_get0_log_store(CT_POLICY_EVAL_CTX *ctx);
+
+/* Sets the log store that is in use */
+void CT_POLICY_EVAL_CTX_set0_log_store(CT_POLICY_EVAL_CTX *ctx,
+ CTLOG_STORE *log_store);
+
+/*
+ * A callback for verifying that the received SCTs are sufficient.
+ * Expected to return 1 if they are sufficient, otherwise 0.
+ * May return a negative integer if an error occurs.
+ * A connection should be aborted if the SCTs are deemed insufficient.
+ */
+typedef int(*ct_validation_cb)(const CT_POLICY_EVAL_CTX *ctx,
+ const STACK_OF(SCT) *scts, void *arg);
+/* Returns 0 if there are invalid SCTs */
+int CT_verify_no_bad_scts(const CT_POLICY_EVAL_CTX *ctx,
+ const STACK_OF(SCT) *scts, void *arg);
+/* Returns 0 if there are invalid SCTS or fewer than one valid SCT */
+int CT_verify_at_least_one_good_sct(const CT_POLICY_EVAL_CTX *ctx,
+ const STACK_OF(SCT) *scts, void *arg);
+
/*****************
* SCT functions *
*****************/
int SCT_verify_v1(SCT *sct, X509 *cert, X509 *preissuer,
X509_PUBKEY *log_pubkey, X509 *issuer_cert);
+/*
+ * Gets the last result of validating this SCT.
+ * If it has not been validated yet, returns SCT_VALIDATION_STATUS_NOT_SET.
+ */
+sct_validation_status_t SCT_get_validation_status(const SCT *sct);
+
+/*
+ * Validates the given SCT with the provided context.
+ * Sets the "validation_status" field of the SCT.
+ * Returns 1 if the SCT is valid and the signature verifies.
+ * Returns 0 if the SCT is invalid or could not be verified.
+ * Returns -1 if an error occurs.
+ */
+int SCT_validate(SCT *sct, const CT_POLICY_EVAL_CTX *ctx);
+
+/*
+ * Validates the given list of SCTs with the provided context.
+ * Populates the "good_scts" and "bad_scts" of the evaluation context.
+ * Returns 1 if there are no invalid SCTs and all signatures verify.
+ * Returns 0 if at least one SCT is invalid or could not be verified.
+ * Returns a negative integer if an error occurs.
+ */
+int SCT_LIST_validate(const STACK_OF(SCT) *scts, CT_POLICY_EVAL_CTX *ctx);
+
+
/*********************************
* SCT parsing and serialisation *
*********************************/
# define CT_F_CTLOG_STORE_LOAD_CTX_NEW 122
# define CT_F_CTLOG_STORE_LOAD_FILE 123
# define CT_F_CT_BASE64_DECODE 124
+# define CT_F_CT_POLICY_EVAL_CTX_GET0_CERT 130
+# define CT_F_CT_POLICY_EVAL_CTX_GET0_ISSUER 131
+# define CT_F_CT_POLICY_EVAL_CTX_GET0_LOG_STORE 132
+# define CT_F_CT_POLICY_EVAL_CTX_NEW 133
+# define CT_F_CT_POLICY_EVAL_CTX_SET0_CERT 134
+# define CT_F_CT_POLICY_EVAL_CTX_SET0_ISSUER 135
+# define CT_F_CT_POLICY_EVAL_CTX_SET0_LOG_STORE 136
# define CT_F_CT_V1_LOG_ID_FROM_PKEY 125
+# define CT_F_CT_VERIFY_AT_LEAST_ONE_GOOD_SCT 137
+# define CT_F_CT_VERIFY_NO_BAD_SCTS 138
# define CT_F_D2I_SCT_LIST 105
# define CT_F_I2D_SCT_LIST 106
# define CT_F_I2O_SCT 107
# define CT_F_O2I_SCT_LIST 111
# define CT_F_O2I_SCT_SIGNATURE 112
# define CT_F_SCT_CTX_NEW 126
+# define CT_F_SCT_LIST_VALIDATE 139
# define CT_F_SCT_NEW 100
# define CT_F_SCT_NEW_FROM_BASE64 127
# define CT_F_SCT_SET0_LOG_ID 101
# define CT_F_SCT_SET_SIGNATURE_NID 103
# define CT_F_SCT_SET_VERSION 104
# define CT_F_SCT_SIGNATURE_IS_VALID 113
+# define CT_F_SCT_VALIDATE 140
# define CT_F_SCT_VERIFY 128
# define CT_F_SCT_VERIFY_V1 129
# define CT_R_LOG_CONF_MISSING_DESCRIPTION 111
# define CT_R_LOG_CONF_MISSING_KEY 112
# define CT_R_LOG_KEY_INVALID 113
+# define CT_R_NOT_ENOUGH_SCTS 116
# define CT_R_SCT_INVALID 104
# define CT_R_SCT_INVALID_SIGNATURE 107
# define CT_R_SCT_LIST_INVALID 105
# define CT_R_SCT_LOG_ID_MISMATCH 114
# define CT_R_SCT_NOT_SET 106
# define CT_R_SCT_UNSUPPORTED_VERSION 115
+# define CT_R_SCT_VALIDATION_STATUS_NOT_SET 117
# define CT_R_UNRECOGNIZED_SIGNATURE_NID 101
# define CT_R_UNSUPPORTED_ENTRY_TYPE 102
# define CT_R_UNSUPPORTED_VERSION 103
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