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Import OpenSSL 1.1.1f

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Steve Dower
2020-04-03 21:53:21 +01:00
parent 6f2f71e7ea
commit e531386a2f
993 changed files with 23821 additions and 3602 deletions
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20
doc/man3/EC_POINT_new.pod
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@@ -171,6 +171,26 @@ The functions EC_POINT_point2oct(), EC_POINT_oct2point(), EC_POINT_point2bn(),
EC_POINT_bn2point(), EC_POINT_point2hex() and EC_POINT_hex2point() convert from
and to EC_POINTs for the formats: octet, BIGNUM and hexadecimal respectively.
The function EC_POINT_point2oct() encodes the given curve point B<p> as an
octet string into the buffer B<buf> of size B<len>, using the specified
conversion form B<form>.
The encoding conforms with Sec. 2.3.3 of the SECG SEC 1 ("Elliptic Curve
Cryptography") standard.
Similarly the function EC_POINT_oct2point() decodes a curve point into B<p> from
the octet string contained in the given buffer B<buf> of size B<len>, conforming
to Sec. 2.3.4 of the SECG SEC 1 ("Elliptic Curve Cryptography") standard.
The functions EC_POINT_point2hex() and EC_POINT_point2bn() convert a point B<p>,
respectively, to the hexadecimal or BIGNUM representation of the same
encoding of the function EC_POINT_point2oct().
Vice versa, similarly to the function EC_POINT_oct2point(), the functions
EC_POINT_hex2point() and EC_POINT_point2bn() decode the hexadecimal or
BIGNUM representation into the EC_POINT B<p>.
Notice that, according to the standard, the octet string encoding of the point
at infinity for a given curve is fixed to a single octet of value zero and that,
vice versa, a single octet of size zero is decoded as the point at infinity.
The function EC_POINT_point2oct() must be supplied with a buffer long enough to
store the octet form. The return value provides the number of octets stored.
Calling the function with a NULL buffer will not perform the conversion but