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* Provide a replacement assembly implementation for SHA-512 on amd64.jsing2024-11-163-6/+336
| | | | | | | | Replace the perlasm generated SHA-512 assembly with a more readable version and the same C wrapper introduced for SHA-256. As for SHA-256, on a modern CPU the performance is largely the same. ok tb@
* Add CPU capability detection for the Intel SHA extensions (aka SHA-NI).jsing2024-11-162-5/+27
| | | | | | | This also provides a crypto_cpu_caps_amd64 variable that can be checked for CRYPTO_CPU_CAPS_AMD64_SHA. ok tb@
* Specify size for K256 symbol.jsing2024-11-161-1/+2
| | | | Missing sizes spotted by guenther@
* Merge ec_kmeth into ec_keytb2024-11-163-331/+272
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* Shuffle the global default_ec_key_meth down a few linestb2024-11-161-3/+3
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* Move the default EC_KEY_METHOD to the end of the filetb2024-11-161-50/+50
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* Use a better curve and a better hash for the ECDSA_do_sign() exampletb2024-11-151-9/+9
| | | | (Many examples in this directory are really bad. This is no exception.)
* ec_mult: fix includestb2024-11-151-2/+5
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* EC_KEY_copy() don't leave stale private keys in placetb2024-11-151-6/+3
| | | | | | | | | | | | As most other objects, EC_KEYs can be as sparsely and invalidly populated as imagination permits and the competent designers of EC_KEY_copy() chose to just copy over what's available (yeah, what kind of copy is that?) and leave in place what happens to be there. In particular, if the dest EC key was used with a different group and has a private key, but the source key doesn't, the dest private key remains intact, as invalid, incompatible and unusable as it may be. Fix this by clearing said private key. ok jsing
* x509_policy.c: point at RFC 9618tb2024-11-141-3/+3
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* eck_prn: some more air to breathetb2024-11-141-1/+3
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* eck_prn: fix includestb2024-11-141-2/+4
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* ec_prn: use pkey rather than pk for an EC_KEYtb2024-11-141-11/+11
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* eck_prn: use group rather than x for an EC_GROUPtb2024-11-141-3/+3
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* eck_prn: use ec_key rather than x for an EC_KEYtb2024-11-141-9/+9
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* eck_prn: consistently use bio for a BIO rather than b and bp randomlytb2024-11-141-43/+43
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* eck_prn: sprinkle some empty lines and drop some parens for consistencytb2024-11-141-7/+23
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* eck_prn: shuffle printing functions into a better ordertb2024-11-141-47/+47
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* AES_{decrypt,encrypt}() don't return void internal functiontb2024-11-131-3/+3
| | | | | | | "A return statement with an expression shall not appear in a function whose return type is void." ok deraadt miod
* Link the new manual page EVP_PKEY_new_CMAC_key(3) to the buildschwarze2024-11-122-29/+5
| | | | | and purge the superseded information from the algorithm-independent page EVP_PKEY_new(3).
* Document EVP_PKEY_new_CMAC_key(3) in sufficient detail such that readersschwarze2024-11-121-0/+159
| | | | | | | | | | | | | | | | | | | | | stand a chance of using the API correctly. Admittedly, having so much text below EXAMPLES is somewhat unusual. While all that information is required to use the function correctly, strictly speaking, it is not part of the specification of what EVP_PKEY_new_CMAC_key(3) does, so it woundn't really belong in the DESCRIPTION. Now, designing an API function in such a way that using it correctly requires lots of information about *other* functions and such that all that additional information does not belong into the manual pages of those other functions (both because that would cause distractions in various other manual pages and because it would scatter required information around lots of different pages) is certainly not stellar API design. But we can't help that because these APIs were all originally designed by OpenSSL. Significant feedback and OK tb@.
* Add comment for crypto_cpu_caps_aarch64.jsing2024-11-121-1/+2
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* Use multipliers for stack offsets and tweak comment.jsing2024-11-121-9/+9
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* Check the correct variable in cpuid().jsing2024-11-122-4/+4
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* Garbage collect a reference to ecp_mont.c, rewrap commenttb2024-11-121-7/+6
| | | | spotted by jsing
* ecp_methods.c: rewrap some linestb2024-11-121-25/+25
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* Lose the ugly GFp_simple_ and GFp_mont_ infixestb2024-11-121-127/+117
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* Make ec_GFp_simple_* statictb2024-11-122-71/+32
| | | | | These functions are no longer shared between multiple files, so they can be static in ecp_methods.c and the long list of prototypes can go away.
* Merge ecp_mont.c into ecp_methods.ctb2024-11-123-273/+206
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* KNF nit for end of comment markertb2024-11-121-2/+2
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* Rename ecp_smpl.c to ecp_methods.ctb2024-11-122-3/+3
| | | | | | | | While not the greatest of names, ecp_methods.c is better than ecp_smpl.c. It matches the naming ecx_methods.c and in a subsequent commit it will become the new home of the stuff in ecp_mont.c as well. discussed with jsing
* Fix a brainfart that happened to me in 2020:schwarze2024-11-121-9/+7
| | | | | | | | | | It is impossible to use EVP_DigestInit_ex(3) for CMAC. Besides, EVP_PKEY_CTX_new_id(3) does not produce an EVP_MD_CTX object. Instead, mention the easiest way to actually get the job done using EVP_PKEY_new_CMAC_key(3) and EVP_DigestSignInit(3). OK tb@
* Wrap comment badly mistreated by an autoformatter due to missing /*-tb2024-11-101-3/+6
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* Garbage collect an unused variabletb2024-11-101-3/+1
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* Mention the key lengths of some encryption algorithms.schwarze2024-11-094-21/+47
| | | | | | | | This is relevant because EVP_EncryptInit(3) takes a "key" argument, and users need to consider the size of that argument. While here, also mention whether ciphers are stream ciphers or block ciphers and what the block size is.
* Weed out the last remaining refences to the obsoleteschwarze2024-11-084-67/+77
| | | | | | | | function EVP_MD_CTX_init(3) and talk about EVP_MD_CTX_new(3) instead. This is similar in spirit to OpenSSL commit 25191fff (Dec 1, 2015), but i'm also mentioning EVP_MD_CTX_reset(3), slightly reordering some sentences in a more systematic way, and improving some related wordings to be more precise and read better.
* Clean up EC_KEY_dup()tb2024-11-081-10/+15
| | | | | | | | | This calls init() with the default method, so EC_KEY_copy() gets a chance to call finish() if the source's method doesn't match. But no init() call is made in EC_KEY_copy(). Of course the source method's copy() needs to be able to cope. The great news is that ssh uses this. Sigh. ok beck jsing
* Sweep over EC_KEY_copy()tb2024-11-081-32/+28
| | | | | | | | | | | | | | | | | This is a special snowflake. Its logic is such that it only overwrites things on the target that are available in the source. So if the source has no group (yes, that's possible), the destination's group will remain. Even better: if you copy a public key over what was previously a private key, the private scalar will remain. That's almost never going to result in a valid key. If you copy from a larger group to a smaller group the private scalar will most likely be out of range [1, order). Use dup functions instead of reimplementing badly and add a snarky comment courtesy of beck to one of those silly const annotations (there's a small addendum by me). ok beck jsing
* Clean up EC_KEY_freetb2024-11-081-14/+11
| | | | | | | | r is a silly name for an EC_KEY and it is silly to assign the refcount to a variable i (short for uninspired) when you can check the function return directly. Tweak sizeof in freezero to jsing's liking. ok beck jsing
* Clean up EC_KEY_new_by_curve_name()tb2024-11-081-14/+20
| | | | | | | | Use a better variable name, simpler error handling. This could be simplified further if we decide to have an ec_key_set0_group() that avoids a copy. ok beck jsing
* List CMAC_CTX_copy(3) in the SYNOPSIS. It was alreadyschwarze2024-11-081-2/+7
| | | | mentioned in NAME and described in DESCRIPTION and RETURN VALUES.
* Provide a replacement assembly implementation for SHA-256 on amd64.jsing2024-11-083-6/+330
| | | | | | | | | | | | | Replace the perlasm generated SHA-256 assembly implementation with one that is actually readable. Call the assembly implementation from a C wrapper that can, in the future, dispatch to alternate implementations. Performance is similar (or even better) on modern CPUs, while somewhat slower on older CPUs (this is in part due to the wrapper, the impact of which is more noticable with small block sizes). Thanks to gkoehler@ and tb@ for testing. ok tb@
* Rewrite bn2binpad.jsing2024-11-081-58/+44
| | | | | | | | | | | | | | | Rewrite bn2binpad, removing some OpenSSL specific behaviour and unnecessary complexity. Our BN_num_bytes() does not return bogus lengths, so we don't need to see if things work out with nominated outputs. Swipe away some endianness_t, but continue to ignore negatives and don't dare give away padded zeroes. Implement a more readable constant time conversion. In particular, the little endian is the less common use case, which we can implement by reversing the padded output in place, rather than complicating all of the conversion code. ok beck@ tb@
* Provide constant time comparison functions for size_t.jsing2024-11-081-1/+69
| | | | | | These will be used in an upcoming change. ok beck@ tb@
* Relocate ECParameters_dup() to ec_asn1tb2024-11-082-24/+24
| | | | | | | | | jsing rightly points out that this has nothing to do with ASN.1, but ec_lib.c has no EC_KEY knowledge otherwise (it's about groups and points) and moving it to ec_key.c is also not satisfactory since the weird d2i/i2d for ECParameters don't belong there either. no objection from jsing
* Replace aarch64 CPU capabilities detection code.jsing2024-11-086-261/+114
| | | | | | | | | | | | Replace the aarch64 CPU detection code with a version that parses ISAR0, avoiding signal handling and SIGILL. This gets ISAR0 via sysctl(), but this can be adapted to other mechanisms for other platforms (or alternatively the same can be achieved via HWCAP). This now follows the same naming/design as used by amd64 and i386, hence define HAVE_CRYPTO_CPU_CAPS_INIT for aarch64. ok kettenis@ tb@
* Rename EC_YBIT to EC_POINT_YBITtb2024-11-081-6/+6
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* Ugh. Don't return the group after freeing ittb2024-11-081-2/+2
| | | | CID 514612
* document EVP_PKEY_CTRL_SET_MAC_KEY for CMACschwarze2024-11-071-2/+16
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* document EVP_PKEY_CTRL_CIPHER, providing a bit of contextschwarze2024-11-061-2/+33
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