2 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
5 /* ====================================================================
6 * Copyright (c) 2015 The OpenSSL Project. All rights reserved.
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9 * modification, are permitted provided that the following conditions
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51 * ====================================================================
54 #ifndef HEADER_CT_LOCL_H
55 # define HEADER_CT_LOCL_H
61 # ifndef OPENSSL_NO_CT
63 /* All hashes are currently SHA256 */
64 # define SCT_V1_HASHLEN 32
65 /* Minimum RSA key size, from RFC6962 */
66 # define SCT_MIN_RSA_BITS 2048
69 * From RFC6962: opaque SerializedSCT<1..2^16-1>; struct { SerializedSCT
70 * sct_list <1..2^16-1>; } SignedCertificateTimestampList;
73 # define MAX_SCT_SIZE 65535
74 # define MAX_SCT_LIST_SIZE MAX_SCT_SIZE
88 sct_version_t version;
89 /* If version is not SCT_V1 this contains the encoded SCT */
93 * If version is SCT_V1, fields below contain components of the SCT.
94 * "log_id", "ext" and "sig" point to buffers allocated with
97 unsigned char *log_id;
101 * Note, we cannot distinguish between an unset timestamp, and one
102 * that is set to 0. However since CT didn't exist in 1970, no real
103 * SCT should ever be set as such.
108 unsigned char hash_alg;
109 unsigned char sig_alg;
113 log_entry_type_t entry_type;
120 * Caller is responsible for calling SCT_free when done.
125 * Free SCT and underlying datastructures.
127 void SCT_free(SCT *sct);
130 * Set the version of an SCT.
131 * Returns 1 on success, 0 if the version is unrecognized.
133 int SCT_set_version(SCT *sct, sct_version_t version);
136 * Set the log entry type of an SCT.
137 * Returns 1 on success.
139 int SCT_set_log_entry_type(SCT *sct, log_entry_type_t entry_type);
142 * Set the log id of an SCT to point directly to the *log_id specified.
143 * The SCT takes ownership of the specified pointer.
144 * Returns 1 on success.
146 int SCT_set0_log_id(SCT *sct, unsigned char *log_id, size_t log_id_len);
149 * Set the timestamp of an SCT.
151 void SCT_set_timestamp(SCT *sct, uint64_t timestamp);
154 * Set the signature type of an SCT
155 * Currently NID_sha256WithRSAEncryption or NID_ecdsa_with_SHA256.
156 * Returns 1 on success.
158 int SCT_set_signature_nid(SCT *sct, int nid);
161 * Set the extensions of an SCT to point directly to the *ext specified.
162 * The SCT takes ownership of the specified pointer.
164 void SCT_set0_extensions(SCT *sct, unsigned char *ext, size_t ext_len);
167 * Set the signature of an SCT to point directly to the *sig specified.
168 * The SCT takes ownership of the specified pointer.
170 void SCT_set0_signature(SCT *sct, unsigned char *sig, size_t sig_len);
173 * Returns the version of the SCT.
175 sct_version_t SCT_get_version(const SCT *sct);
178 * Returns the log entry type of the SCT.
180 log_entry_type_t SCT_get_log_entry_type(const SCT *sct);
183 * Set *log_id to point to the log id for the SCT. log_id must not be NULL.
184 * The SCT retains ownership of this pointer.
185 * Returns length of the data pointed to.
187 size_t SCT_get0_log_id(const SCT *sct, unsigned char **log_id);
190 * Returns the timestamp for the SCT.
192 uint64_t SCT_get_timestamp(const SCT *sct);
195 * Return the nid for the signature used by the SCT.
196 * Currently NID_sha256WithRSAEncryption or NID_ecdsa_with_SHA256
199 int SCT_get_signature_nid(const SCT *sct);
202 * Set *ext to point to the extension data for the SCT. ext must not be NULL.
203 * The SCT retains ownership of this pointer.
204 * Returns length of the data pointed to.
206 size_t SCT_get0_extensions(const SCT *sct, unsigned char **ext);
209 * Set *sig to point to the signature for the SCT. sig must not be NULL.
210 * The SCT retains ownership of this pointer.
211 * Returns length of the data pointed to.
213 size_t SCT_get0_signature(const SCT *sct, unsigned char **sig);
218 /* BEGIN ERROR CODES */
220 * The following lines are auto generated by the script mkerr.pl. Any changes
221 * made after this point may be overwritten when the script is next run.
223 void ERR_load_CT_strings(void);
225 /* Error codes for the CT functions. */
227 /* Function codes. */
228 # define CT_F_SCT_NEW 100
229 # define CT_F_SCT_SET0_LOG_ID 101
230 # define CT_F_SCT_SET_LOG_ENTRY_TYPE 102
231 # define CT_F_SCT_SET_SIGNATURE_NID 103
232 # define CT_F_SCT_SET_VERSION 104
235 # define CT_R_INVALID_LOG_ID_LENGTH 100
236 # define CT_R_UNRECOGNIZED_SIGNATURE_NID 101
237 # define CT_R_UNSUPPORTED_ENTRY_TYPE 102
238 # define CT_R_UNSUPPORTED_VERSION 103