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Diffstat (limited to 'secure/lib/libcrypto/man/man3/EVP_PKEY_size.3')
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diff --git a/secure/lib/libcrypto/man/man3/EVP_PKEY_size.3 b/secure/lib/libcrypto/man/man3/EVP_PKEY_size.3 deleted file mode 100644 index 64d6aa8842fb..000000000000 --- a/secure/lib/libcrypto/man/man3/EVP_PKEY_size.3 +++ /dev/null @@ -1,210 +0,0 @@ -.\" Automatically generated by Pod::Man 4.14 (Pod::Simple 3.40) -.\" -.\" Standard preamble: -.\" ======================================================================== -.de Sp \" Vertical space (when we can't use .PP) -.if t .sp .5v -.if n .sp -.. -.de Vb \" Begin verbatim text -.ft CW -.nf -.ne \\$1 -.. -.de Ve \" End verbatim text -.ft R -.fi -.. -.\" Set up some character translations and predefined strings. \*(-- will -.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left -.\" double quote, and \*(R" will give a right double quote. \*(C+ will -.\" give a nicer C++. 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Always turn off hyphenation; it makes -.\" way too many mistakes in technical documents. -.if n .ad l -.nh -.SH "NAME" -EVP_PKEY_size, EVP_PKEY_bits, EVP_PKEY_security_bits \&\- EVP_PKEY information functions -.SH "SYNOPSIS" -.IX Header "SYNOPSIS" -.Vb 1 -\& #include <openssl/evp.h> -\& -\& int EVP_PKEY_size(const EVP_PKEY *pkey); -\& int EVP_PKEY_bits(const EVP_PKEY *pkey); -\& int EVP_PKEY_security_bits(const EVP_PKEY *pkey); -.Ve -.SH "DESCRIPTION" -.IX Header "DESCRIPTION" -\&\fBEVP_PKEY_size()\fR returns the maximum suitable size for the output -buffers for almost all operations that can be done with \fIpkey\fR. -The primary documented use is with \fBEVP_SignFinal\fR\|(3) and -\&\fBEVP_SealInit\fR\|(3), but it isn't limited there. The returned size is -also large enough for the output buffer of \fBEVP_PKEY_sign\fR\|(3), -\&\fBEVP_PKEY_encrypt\fR\|(3), \fBEVP_PKEY_decrypt\fR\|(3), \fBEVP_PKEY_derive\fR\|(3). -.PP -It must be stressed that, unless the documentation for the operation -that's being performed says otherwise, the size returned by -\&\fBEVP_PKEY_size()\fR is only preliminary and not exact, so the final -contents of the target buffer may be smaller. It is therefore crucial -to take note of the size given back by the function that performs the -operation, such as \fBEVP_PKEY_sign\fR\|(3) (the \fIsiglen\fR argument will -receive that length), to avoid bugs. -.PP -\&\fBEVP_PKEY_bits()\fR returns the cryptographic length of the cryptosystem -to which the key in \fIpkey\fR belongs, in bits. Note that the definition -of cryptographic length is specific to the key cryptosystem. -.PP -\&\fBEVP_PKEY_security_bits()\fR returns the number of security bits of the given -\&\fIpkey\fR, bits of security is defined in \s-1NIST SP800\-57.\s0 -.SH "RETURN VALUES" -.IX Header "RETURN VALUES" -\&\fBEVP_PKEY_size()\fR, \fBEVP_PKEY_bits()\fR and \fBEVP_PKEY_security_bits()\fR return a -positive number, or 0 if this size isn't available. -.SH "NOTES" -.IX Header "NOTES" -Most functions that have an output buffer and are mentioned with -\&\fBEVP_PKEY_size()\fR have a functionality where you can pass \s-1NULL\s0 for the -buffer and still pass a pointer to an integer and get the exact size -that this function call delivers in the context that it's called in. -This allows those functions to be called twice, once to find out the -exact buffer size, then allocate the buffer in between, and call that -function again actually output the data. For those functions, it -isn't strictly necessary to call \fBEVP_PKEY_size()\fR to find out the -buffer size, but may be useful in cases where it's desirable to know -the upper limit in advance. -.PP -It should also be especially noted that \fBEVP_PKEY_size()\fR shouldn't be -used to get the output size for \fBEVP_DigestSignFinal()\fR, according to -\&\*(L"\s-1NOTES\*(R"\s0 in \fBEVP_DigestSignFinal\fR\|(3). -.SH "SEE ALSO" -.IX Header "SEE ALSO" -\&\fBEVP_SignFinal\fR\|(3), -\&\fBEVP_SealInit\fR\|(3), -\&\fBEVP_PKEY_sign\fR\|(3), -\&\fBEVP_PKEY_encrypt\fR\|(3), -\&\fBEVP_PKEY_decrypt\fR\|(3), -\&\fBEVP_PKEY_derive\fR\|(3) -.SH "COPYRIGHT" -.IX Header "COPYRIGHT" -Copyright 2020 The OpenSSL Project Authors. All Rights Reserved. -.PP -Licensed under the Apache License 2.0 (the \*(L"License\*(R"). You may not use -this file except in compliance with the License. You can obtain a copy -in the file \s-1LICENSE\s0 in the source distribution or at -<https://www.openssl.org/source/license.html>. |