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.Dd $Mdocdate: November 15 2022 $
.Dt BN_KRONECKER 3
.Os
.Sh NAME
.Nm BN_kronecker
.Nd Kronecker symbol
.Sh SYNOPSIS
.In openssl/bn.h
.Ft int
.Fo BN_kronecker
.Fa "const BIGNUM *a"
.Fa "const BIGNUM *b"
.Fa "BN_CTX *ctx"
.Fc
.Sh DESCRIPTION
.Fn BN_kronecker
computes the Kronecker symbol
.Pq a | b ,
which generalizes the Legendre and Jacobi symbols
for arbitrary integer numbers
.Fa b .
.Sh RETURN VALUES
.Fn BN_kronecker
returns \-1, 0, or 1 in case of success or \-2 on error.
.Sh SEE ALSO
.Xr BN_CTX_new 3 ,
.Xr BN_gcd 3 ,
.Xr BN_mod_sqrt 3 ,
.Xr BN_new 3
.Rs
.%A Henri Cohen
.%B A Course in Computational Algebraic Number Theory
.%I Springer
.%C Berlin
.%D 1993
.%O Algorithm 1.4.10
.Re
.Sh HISTORY
.Fn BN_kronecker
first appeared in OpenSSL 0.9.7 and has been available since
.Ox 3.2 .