1CTLOG_NEW(3ossl)                    OpenSSL                   CTLOG_NEW(3ossl)
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NAME

6       CTLOG_new_ex, CTLOG_new, CTLOG_new_from_base64,
7       CTLOG_new_from_base64_ex, CTLOG_free, CTLOG_get0_name,
8       CTLOG_get0_log_id, CTLOG_get0_public_key - encapsulates information
9       about a Certificate Transparency log
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SYNOPSIS

12        #include <openssl/ct.h>
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14        CTLOG *CTLOG_new_ex(EVP_PKEY *public_key, const char *name,
15                            OSSL_LIB_CTX *libctx, const char *propq);
16        CTLOG *CTLOG_new(EVP_PKEY *public_key, const char *name);
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18        int CTLOG_new_from_base64_ex(CTLOG **ct_log, const char *pkey_base64,
19                                     const char *name, OSSL_LIB_CTX *libctx,
20                                     const char *propq);
21        int CTLOG_new_from_base64(CTLOG ** ct_log,
22                                  const char *pkey_base64, const char *name);
23        void CTLOG_free(CTLOG *log);
24        const char *CTLOG_get0_name(const CTLOG *log);
25        void CTLOG_get0_log_id(const CTLOG *log, const uint8_t **log_id,
26                               size_t *log_id_len);
27        EVP_PKEY *CTLOG_get0_public_key(const CTLOG *log);
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DESCRIPTION

30       CTLOG_new_ex() returns a new CTLOG that represents the Certificate
31       Transparency (CT) log with the given public key and associates it with
32       the library context libctx and property query string propq. A name must
33       also be provided that can be used to help users identify this log.
34       Ownership of the public key is transferred.
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36       CTLOG_new() does the same thing as CTLOG_new_ex() but with the default
37       library context and the default property query string.
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39       CTLOG_new_from_base64_ex() also creates a new CTLOG, but takes the
40       public key in base64-encoded DER form and sets the ct_log pointer to
41       point to the new CTLOG. The base64 will be decoded and the public key
42       parsed. The CTLOG will be associated with the given library context
43       libctx and property query string propq.
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45       CTLOG_new_from_base64() does the same thing as
46       CTLOG_new_from_base64_ex() except that the default library context and
47       property query string are used.
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49       Regardless of whether CTLOG_new() or CTLOG_new_from_base64() is used,
50       it is the caller's responsibility to pass the CTLOG to CTLOG_free()
51       once it is no longer needed. This will delete it and, if created by
52       CTLOG_new(), the EVP_PKEY that was passed to it.
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54       CTLOG_get0_name() returns the name of the log, as provided when the
55       CTLOG was created. Ownership of the string remains with the CTLOG.
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57       CTLOG_get0_log_id() sets *log_id to point to a string containing that
58       log's LogID (see RFC 6962). It sets *log_id_len to the length of that
59       LogID. For a v1 CT log, the LogID will be a SHA-256 hash (i.e. 32 bytes
60       long). Ownership of the string remains with the CTLOG.
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62       CTLOG_get0_public_key() returns the public key of the CT log. Ownership
63       of the EVP_PKEY remains with the CTLOG.
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RETURN VALUES

66       CTLOG_new() will return NULL if an error occurs.
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68       CTLOG_new_from_base64() will return 1 on success, 0 otherwise.
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SEE ALSO

71       ct(7)
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HISTORY

74       The functions CTLOG_new_ex() and CTLOG_new_from_base64_ex() were added
75       in OpenSSL 3.0. All other functions were added in OpenSSL 1.1.0.
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78       Copyright 2016-2020 The OpenSSL Project Authors. All Rights Reserved.
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80       Licensed under the Apache License 2.0 (the "License").  You may not use
81       this file except in compliance with the License.  You can obtain a copy
82       in the file LICENSE in the source distribution or at
83       <https://www.openssl.org/source/license.html>.
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873.1.1                             2023-08-31                  CTLOG_NEW(3ossl)
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