+++ /dev/null
-/*
- * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
- *
- * Licensed under the OpenSSL license (the "License"). You may not use
- * this file except in compliance with the License. You can obtain a copy
- * in the file LICENSE in the source distribution or at
- * https://www.openssl.org/source/license.html
- */
-
-#ifndef HEADER_CT_H
-# define HEADER_CT_H
-
-# include <openssl/opensslconf.h>
-
-# ifndef OPENSSL_NO_CT
-# include <openssl/ossl_typ.h>
-# include <openssl/safestack.h>
-# include <openssl/x509.h>
-# ifdef __cplusplus
-extern "C" {
-# endif
-
-
-/* Minimum RSA key size, from RFC6962 */
-# define SCT_MIN_RSA_BITS 2048
-
-/* All hashes are SHA256 in v1 of Certificate Transparency */
-# define CT_V1_HASHLEN SHA256_DIGEST_LENGTH
-
-typedef enum {
- CT_LOG_ENTRY_TYPE_NOT_SET = -1,
- CT_LOG_ENTRY_TYPE_X509 = 0,
- CT_LOG_ENTRY_TYPE_PRECERT = 1
-} ct_log_entry_type_t;
-
-typedef enum {
- SCT_VERSION_NOT_SET = -1,
- SCT_VERSION_V1 = 0
-} sct_version_t;
-
-typedef enum {
- SCT_SOURCE_UNKNOWN,
- SCT_SOURCE_TLS_EXTENSION,
- SCT_SOURCE_X509V3_EXTENSION,
- 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.
- * The caller is responsible for calling CT_POLICY_EVAL_CTX_free when finished
- * with the CT_POLICY_EVAL_CTX.
- */
-CT_POLICY_EVAL_CTX *CT_POLICY_EVAL_CTX_new(void);
-
-/* Deletes a policy evaluation context and anything it owns. */
-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(const CT_POLICY_EVAL_CTX *ctx);
-
-/*
- * Sets the certificate associated with the received SCTs.
- * Increments the reference count of cert.
- * Returns 1 on success, 0 otherwise.
- */
-int CT_POLICY_EVAL_CTX_set1_cert(CT_POLICY_EVAL_CTX *ctx, X509 *cert);
-
-/* Gets the issuer of the aforementioned certificate */
-X509* CT_POLICY_EVAL_CTX_get0_issuer(const CT_POLICY_EVAL_CTX *ctx);
-
-/*
- * Sets the issuer of the certificate associated with the received SCTs.
- * Increments the reference count of issuer.
- * Returns 1 on success, 0 otherwise.
- */
-int CT_POLICY_EVAL_CTX_set1_issuer(CT_POLICY_EVAL_CTX *ctx, X509 *issuer);
-
-/* Gets the CT logs that are trusted sources of SCTs */
-const CTLOG_STORE *CT_POLICY_EVAL_CTX_get0_log_store(const CT_POLICY_EVAL_CTX *ctx);
-
-/* Sets the log store that is in use. It must outlive the CT_POLICY_EVAL_CTX. */
-void CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(CT_POLICY_EVAL_CTX *ctx,
- CTLOG_STORE *log_store);
-
-/*****************
- * SCT functions *
- *****************/
-
-/*
- * Creates a new, blank SCT.
- * The caller is responsible for calling SCT_free when finished with the SCT.
- */
-SCT *SCT_new(void);
-
-/*
- * Creates a new SCT from some base64-encoded strings.
- * The caller is responsible for calling SCT_free when finished with the SCT.
- */
-SCT *SCT_new_from_base64(unsigned char version,
- const char *logid_base64,
- ct_log_entry_type_t entry_type,
- uint64_t timestamp,
- const char *extensions_base64,
- const char *signature_base64);
-
-/*
- * Frees the SCT and the underlying data structures.
- */
-void SCT_free(SCT *sct);
-
-/*
- * Free a stack of SCTs, and the underlying SCTs themselves.
- * Intended to be compatible with X509V3_EXT_FREE.
- */
-void SCT_LIST_free(STACK_OF(SCT) *a);
-
-/*
- * Returns the version of the SCT.
- */
-sct_version_t SCT_get_version(const SCT *sct);
-
-/*
- * Set the version of an SCT.
- * Returns 1 on success, 0 if the version is unrecognized.
- */
-__owur int SCT_set_version(SCT *sct, sct_version_t version);
-
-/*
- * Returns the log entry type of the SCT.
- */
-ct_log_entry_type_t SCT_get_log_entry_type(const SCT *sct);
-
-/*
- * Set the log entry type of an SCT.
- * Returns 1 on success, 0 otherwise.
- */
-__owur int SCT_set_log_entry_type(SCT *sct, ct_log_entry_type_t entry_type);
-
-/*
- * Gets the ID of the log that an SCT came from.
- * Ownership of the log ID remains with the SCT.
- * Returns the length of the log ID.
- */
-size_t SCT_get0_log_id(const SCT *sct, unsigned char **log_id);
-
-/*
- * Set the log ID of an SCT to point directly to the *log_id specified.
- * The SCT takes ownership of the specified pointer.
- * Returns 1 on success, 0 otherwise.
- */
-__owur int SCT_set0_log_id(SCT *sct, unsigned char *log_id, size_t log_id_len);
-
-/*
- * Set the log ID of an SCT.
- * This makes a copy of the log_id.
- * Returns 1 on success, 0 otherwise.
- */
-__owur int SCT_set1_log_id(SCT *sct, const unsigned char *log_id,
- size_t log_id_len);
-
-/*
- * Returns the timestamp for the SCT (epoch time in milliseconds).
- */
-uint64_t SCT_get_timestamp(const SCT *sct);
-
-/*
- * Set the timestamp of an SCT (epoch time in milliseconds).
- */
-void SCT_set_timestamp(SCT *sct, uint64_t timestamp);
-
-/*
- * Return the NID for the signature used by the SCT.
- * For CT v1, this will be either NID_sha256WithRSAEncryption or
- * NID_ecdsa_with_SHA256 (or NID_undef if incorrect/unset).
- */
-int SCT_get_signature_nid(const SCT *sct);
-
-/*
- * Set the signature type of an SCT
- * For CT v1, this should be either NID_sha256WithRSAEncryption or
- * NID_ecdsa_with_SHA256.
- * Returns 1 on success, 0 otherwise.
- */
-__owur int SCT_set_signature_nid(SCT *sct, int nid);
-
-/*
- * Set *ext to point to the extension data for the SCT. ext must not be NULL.
- * The SCT retains ownership of this pointer.
- * Returns length of the data pointed to.
- */
-size_t SCT_get0_extensions(const SCT *sct, unsigned char **ext);
-
-/*
- * Set the extensions of an SCT to point directly to the *ext specified.
- * The SCT takes ownership of the specified pointer.
- */
-void SCT_set0_extensions(SCT *sct, unsigned char *ext, size_t ext_len);
-
-/*
- * Set the extensions of an SCT.
- * This takes a copy of the ext.
- * Returns 1 on success, 0 otherwise.
- */
-__owur int SCT_set1_extensions(SCT *sct, const unsigned char *ext,
- size_t ext_len);
-
-/*
- * Set *sig to point to the signature for the SCT. sig must not be NULL.
- * The SCT retains ownership of this pointer.
- * Returns length of the data pointed to.
- */
-size_t SCT_get0_signature(const SCT *sct, unsigned char **sig);
-
-/*
- * Set the signature of an SCT to point directly to the *sig specified.
- * The SCT takes ownership of the specified pointer.
- */
-void SCT_set0_signature(SCT *sct, unsigned char *sig, size_t sig_len);
-
-/*
- * Set the signature of an SCT to be a copy of the *sig specified.
- * Returns 1 on success, 0 otherwise.
- */
-__owur int SCT_set1_signature(SCT *sct, const unsigned char *sig,
- size_t sig_len);
-
-/*
- * The origin of this SCT, e.g. TLS extension, OCSP response, etc.
- */
-sct_source_t SCT_get_source(const SCT *sct);
-
-/*
- * Set the origin of this SCT, e.g. TLS extension, OCSP response, etc.
- * Returns 1 on success, 0 otherwise.
- */
-__owur int SCT_set_source(SCT *sct, sct_source_t source);
-
-/*
- * Returns a text string describing the validation status of |sct|.
- */
-const char *SCT_validation_status_string(const SCT *sct);
-
-/*
- * Pretty-prints an |sct| to |out|.
- * It will be indented by the number of spaces specified by |indent|.
- * If |logs| is not NULL, it will be used to lookup the CT log that the SCT came
- * from, so that the log name can be printed.
- */
-void SCT_print(const SCT *sct, BIO *out, int indent, const CTLOG_STORE *logs);
-
-/*
- * Pretty-prints an |sct_list| to |out|.
- * It will be indented by the number of spaces specified by |indent|.
- * SCTs will be delimited by |separator|.
- * If |logs| is not NULL, it will be used to lookup the CT log that each SCT
- * came from, so that the log names can be printed.
- */
-void SCT_LIST_print(const STACK_OF(SCT) *sct_list, BIO *out, int indent,
- const char *separator, const CTLOG_STORE *logs);
-
-/*
- * 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.
- */
-__owur int SCT_validate(SCT *sct, const CT_POLICY_EVAL_CTX *ctx);
-
-/*
- * Validates the given list of SCTs with the provided context.
- * Sets the "validation_status" field of each SCT.
- * 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.
- */
-__owur int SCT_LIST_validate(const STACK_OF(SCT) *scts,
- CT_POLICY_EVAL_CTX *ctx);
-
-
-/*********************************
- * SCT parsing and serialisation *
- *********************************/
-
-/*
- * Serialize (to TLS format) a stack of SCTs and return the length.
- * "a" must not be NULL.
- * If "pp" is NULL, just return the length of what would have been serialized.
- * If "pp" is not NULL and "*pp" is null, function will allocate a new pointer
- * for data that caller is responsible for freeing (only if function returns
- * successfully).
- * If "pp" is NULL and "*pp" is not NULL, caller is responsible for ensuring
- * that "*pp" is large enough to accept all of the serialized data.
- * Returns < 0 on error, >= 0 indicating bytes written (or would have been)
- * on success.
- */
-__owur int i2o_SCT_LIST(const STACK_OF(SCT) *a, unsigned char **pp);
-
-/*
- * Convert TLS format SCT list to a stack of SCTs.
- * If "a" or "*a" is NULL, a new stack will be created that the caller is
- * responsible for freeing (by calling SCT_LIST_free).
- * "**pp" and "*pp" must not be NULL.
- * Upon success, "*pp" will point to after the last bytes read, and a stack
- * will be returned.
- * Upon failure, a NULL pointer will be returned, and the position of "*pp" is
- * not defined.
- */
-STACK_OF(SCT) *o2i_SCT_LIST(STACK_OF(SCT) **a, const unsigned char **pp,
- size_t len);
-
-/*
- * Serialize (to DER format) a stack of SCTs and return the length.
- * "a" must not be NULL.
- * If "pp" is NULL, just returns the length of what would have been serialized.
- * If "pp" is not NULL and "*pp" is null, function will allocate a new pointer
- * for data that caller is responsible for freeing (only if function returns
- * successfully).
- * If "pp" is NULL and "*pp" is not NULL, caller is responsible for ensuring
- * that "*pp" is large enough to accept all of the serialized data.
- * Returns < 0 on error, >= 0 indicating bytes written (or would have been)
- * on success.
- */
-__owur int i2d_SCT_LIST(const STACK_OF(SCT) *a, unsigned char **pp);
-
-/*
- * Parses an SCT list in DER format and returns it.
- * If "a" or "*a" is NULL, a new stack will be created that the caller is
- * responsible for freeing (by calling SCT_LIST_free).
- * "**pp" and "*pp" must not be NULL.
- * Upon success, "*pp" will point to after the last bytes read, and a stack
- * will be returned.
- * Upon failure, a NULL pointer will be returned, and the position of "*pp" is
- * not defined.
- */
-STACK_OF(SCT) *d2i_SCT_LIST(STACK_OF(SCT) **a, const unsigned char **pp,
- long len);
-
-/*
- * Serialize (to TLS format) an |sct| and write it to |out|.
- * If |out| is null, no SCT will be output but the length will still be returned.
- * If |out| points to a null pointer, a string will be allocated to hold the
- * TLS-format SCT. It is the responsibility of the caller to free it.
- * If |out| points to an allocated string, the TLS-format SCT will be written
- * to it.
- * The length of the SCT in TLS format will be returned.
- */
-__owur int i2o_SCT(const SCT *sct, unsigned char **out);
-
-/*
- * Parses an SCT in TLS format and returns it.
- * If |psct| is not null, it will end up pointing to the parsed SCT. If it
- * already points to a non-null pointer, the pointer will be free'd.
- * |in| should be a pointer to a string containing the TLS-format SCT.
- * |in| will be advanced to the end of the SCT if parsing succeeds.
- * |len| should be the length of the SCT in |in|.
- * Returns NULL if an error occurs.
- * If the SCT is an unsupported version, only the SCT's 'sct' and 'sct_len'
- * fields will be populated (with |in| and |len| respectively).
- */
-SCT *o2i_SCT(SCT **psct, const unsigned char **in, size_t len);
-
-/********************
- * CT log functions *
- ********************/
-
-/*
- * Creates a new CT log instance with the given |public_key| and |name|.
- * Takes ownership of |public_key| but copies |name|.
- * Returns NULL if malloc fails or if |public_key| cannot be converted to DER.
- * Should be deleted by the caller using CTLOG_free when no longer needed.
- */
-CTLOG *CTLOG_new(EVP_PKEY *public_key, const char *name);
-
-/*
- * Creates a new CTLOG instance with the base64-encoded SubjectPublicKeyInfo DER
- * in |pkey_base64|. The |name| is a string to help users identify this log.
- * Returns 1 on success, 0 on failure.
- * Should be deleted by the caller using CTLOG_free when no longer needed.
- */
-int CTLOG_new_from_base64(CTLOG ** ct_log,
- const char *pkey_base64, const char *name);
-
-/*
- * Deletes a CT log instance and its fields.
- */
-void CTLOG_free(CTLOG *log);
-
-/* Gets the name of the CT log */
-const char *CTLOG_get0_name(const CTLOG *log);
-/* Gets the ID of the CT log */
-void CTLOG_get0_log_id(const CTLOG *log, const uint8_t **log_id,
- size_t *log_id_len);
-/* Gets the public key of the CT log */
-EVP_PKEY *CTLOG_get0_public_key(const CTLOG *log);
-
-/**************************
- * CT log store functions *
- **************************/
-
-/*
- * Creates a new CT log store.
- * Should be deleted by the caller using CTLOG_STORE_free when no longer needed.
- */
-CTLOG_STORE *CTLOG_STORE_new(void);
-
-/*
- * Deletes a CT log store and all of the CT log instances held within.
- */
-void CTLOG_STORE_free(CTLOG_STORE *store);
-
-/*
- * Finds a CT log in the store based on its log ID.
- * Returns the CT log, or NULL if no match is found.
- */
-const CTLOG *CTLOG_STORE_get0_log_by_id(const CTLOG_STORE *store,
- const uint8_t *log_id,
- size_t log_id_len);
-
-/*
- * Loads a CT log list into a |store| from a |file|.
- * Returns 1 if loading is successful, or 0 otherwise.
- */
-__owur int CTLOG_STORE_load_file(CTLOG_STORE *store, const char *file);
-
-/*
- * Loads the default CT log list into a |store|.
- * See internal/cryptlib.h for the environment variable and file path that are
- * consulted to find the default file.
- * Returns 1 if loading is successful, or 0 otherwise.
- */
-__owur int CTLOG_STORE_load_default_file(CTLOG_STORE *store);
-
-/* BEGIN ERROR CODES */
-/*
- * The following lines are auto generated by the script mkerr.pl. Any changes
- * made after this point may be overwritten when the script is next run.
- */
-
-int ERR_load_CT_strings(void);
-
-/* Error codes for the CT functions. */
-
-/* Function codes. */
-# define CT_F_CTLOG_NEW 117
-# define CT_F_CTLOG_NEW_FROM_BASE64 118
-# define CT_F_CTLOG_NEW_FROM_CONF 119
-# define CT_F_CTLOG_NEW_NULL 120
-# define CT_F_CTLOG_STORE_LOAD_CTX_NEW 122
-# define CT_F_CTLOG_STORE_LOAD_FILE 123
-# define CT_F_CTLOG_STORE_LOAD_LOG 130
-# define CT_F_CTLOG_STORE_NEW 131
-# define CT_F_CT_BASE64_DECODE 124
-# define CT_F_CT_POLICY_EVAL_CTX_NEW 133
-# define CT_F_CT_V1_LOG_ID_FROM_PKEY 125
-# define CT_F_I2O_SCT 107
-# define CT_F_I2O_SCT_LIST 108
-# define CT_F_I2O_SCT_SIGNATURE 109
-# define CT_F_O2I_SCT 110
-# 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_NEW 100
-# define CT_F_SCT_NEW_FROM_BASE64 127
-# define CT_F_SCT_SET0_LOG_ID 101
-# define CT_F_SCT_SET1_EXTENSIONS 114
-# define CT_F_SCT_SET1_LOG_ID 115
-# define CT_F_SCT_SET1_SIGNATURE 116
-# define CT_F_SCT_SET_LOG_ENTRY_TYPE 102
-# define CT_F_SCT_SET_SIGNATURE_NID 103
-# define CT_F_SCT_SET_VERSION 104
-# define CT_F_SCT_CTX_VERIFY 128
-
-/* Reason codes. */
-# define CT_R_BASE64_DECODE_ERROR 108
-# define CT_R_INVALID_LOG_ID_LENGTH 100
-# define CT_R_LOG_CONF_INVALID 109
-# define CT_R_LOG_CONF_INVALID_KEY 110
-# 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_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_UNRECOGNIZED_SIGNATURE_NID 101
-# define CT_R_UNSUPPORTED_ENTRY_TYPE 102
-# define CT_R_UNSUPPORTED_VERSION 103
-
-# ifdef __cplusplus
-}
-# endif
-# endif
-#endif
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