1 /* crypto/ct/ct_locl.h */
3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
6 /* ====================================================================
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52 * ====================================================================
55 #ifndef HEADER_CT_LOCL_H
56 # define HEADER_CT_LOCL_H
62 # ifndef OPENSSL_NO_CT
64 /* All hashes are currently SHA256 */
65 # define SCT_V1_HASHLEN 32
66 /* Minimum RSA key size, from RFC6962 */
67 # define SCT_MIN_RSA_BITS 2048
70 * From RFC6962: opaque SerializedSCT<1..2^16-1>; struct { SerializedSCT
71 * sct_list <1..2^16-1>; } SignedCertificateTimestampList;
74 # define MAX_SCT_SIZE 65535
75 # define MAX_SCT_LIST_SIZE MAX_SCT_SIZE
89 sct_version_t version;
90 /* If version is not SCT_V1 this contains the encoded SCT */
94 * If version is SCT_V1, fields below contain components of the SCT.
95 * "log_id", "ext" and "sig" point to buffers allocated with
98 unsigned char *log_id;
102 * Note, we cannot distinguish between an unset timestamp, and one
103 * that is set to 0. However since CT didn't exist in 1970, no real
104 * SCT should ever be set as such.
109 unsigned char hash_alg;
110 unsigned char sig_alg;
114 log_entry_type_t entry_type;
117 DECLARE_STACK_OF(SCT)
121 * Caller is responsible for calling SCT_free when done.
126 * Free SCT and underlying datastructures.
128 void SCT_free(SCT *sct);
131 * Set the version of an SCT.
132 * Returns 1 on success, 0 if the version is unrecognized.
134 int SCT_set_version(SCT *sct, sct_version_t version);
137 * Set the log entry type of an SCT.
138 * Returns 1 on success.
140 int SCT_set_log_entry_type(SCT *sct, log_entry_type_t entry_type);
143 * Set the log id of an SCT to point directly to the *log_id specified.
144 * The SCT takes ownership of the specified pointer.
145 * Returns 1 on success.
147 int SCT_set0_log_id(SCT *sct, unsigned char *log_id, size_t log_id_len);
150 * Set the timestamp of an SCT.
152 void SCT_set_timestamp(SCT *sct, uint64_t timestamp);
155 * Set the signature type of an SCT
156 * Currently NID_sha256WithRSAEncryption or NID_ecdsa_with_SHA256.
157 * Returns 1 on success.
159 int SCT_set_signature_nid(SCT *sct, int nid);
162 * Set the extensions of an SCT to point directly to the *ext specified.
163 * The SCT takes ownership of the specified pointer.
165 void SCT_set0_extensions(SCT *sct, unsigned char *ext, size_t ext_len);
168 * Set the signature of an SCT to point directly to the *sig specified.
169 * The SCT takes ownership of the specified pointer.
171 void SCT_set0_signature(SCT *sct, unsigned char *sig, size_t sig_len);
174 * Returns the version of the SCT.
176 sct_version_t SCT_get_version(const SCT *sct);
179 * Returns the log entry type of the SCT.
181 log_entry_type_t SCT_get_log_entry_type(const SCT *sct);
184 * Set *log_id to point to the log id for the SCT. log_id must not be NULL.
185 * The SCT retains ownership of this pointer.
186 * Returns length of the data pointed to.
188 size_t SCT_get0_log_id(const SCT *sct, unsigned char **log_id);
191 * Returns the timestamp for the SCT.
193 uint64_t SCT_get_timestamp(const SCT *sct);
196 * Return the nid for the signature used by the SCT.
197 * Currently NID_sha256WithRSAEncryption or NID_ecdsa_with_SHA256
200 int SCT_get_signature_nid(const SCT *sct);
203 * Set *ext to point to the extension data for the SCT. ext must not be NULL.
204 * The SCT retains ownership of this pointer.
205 * Returns length of the data pointed to.
207 size_t SCT_get0_extensions(const SCT *sct, unsigned char **ext);
210 * Set *sig to point to the signature for the SCT. sig must not be NULL.
211 * The SCT retains ownership of this pointer.
212 * Returns length of the data pointed to.
214 size_t SCT_get0_signature(const SCT *sct, unsigned char **sig);
219 /* BEGIN ERROR CODES */
221 * The following lines are auto generated by the script mkerr.pl. Any changes
222 * made after this point may be overwritten when the script is next run.
224 void ERR_load_CT_strings(void);
226 /* Error codes for the CT functions. */
228 /* Function codes. */
229 # define CT_F_SCT_NEW 100
230 # define CT_F_SCT_SET0_LOG_ID 101
231 # define CT_F_SCT_SET_LOG_ENTRY_TYPE 102
232 # define CT_F_SCT_SET_SIGNATURE_NID 103
233 # define CT_F_SCT_SET_VERSION 104
236 # define CT_R_INVALID_LOG_ID_LENGTH 100
237 # define CT_R_UNRECOGNIZED_SIGNATURE_NID 101
238 # define CT_R_UNSUPPORTED_ENTRY_TYPE 102
239 # define CT_R_UNSUPPORTED_VERSION 103