path: root/lib/libcrypto/man/d2i_RSAPublicKey.3

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.Dd $Mdocdate: December 26 2016 $
.Dt D2I_RSAPUBLICKEY 3
.Os
.Sh NAME
.Nm d2i_RSAPublicKey ,
.Nm i2d_RSAPublicKey ,
.Nm d2i_RSAPrivateKey ,
.Nm i2d_RSAPrivateKey ,
.Nm d2i_Netscape_RSA ,
.Nm i2d_Netscape_RSA ,
.Nm d2i_RSAPublicKey_bio ,
.Nm d2i_RSAPublicKey_fp ,
.Nm i2d_RSAPublicKey_bio ,
.Nm i2d_RSAPublicKey_fp ,
.Nm d2i_RSAPrivateKey_bio ,
.Nm d2i_RSAPrivateKey_fp ,
.Nm i2d_RSAPrivateKey_bio ,
.Nm i2d_RSAPrivateKey_fp ,
.Nm d2i_RSA_PUBKEY ,
.Nm i2d_RSA_PUBKEY ,
.Nm d2i_RSA_PUBKEY_bio ,
.Nm d2i_RSA_PUBKEY_fp ,
.Nm i2d_RSA_PUBKEY_bio ,
.Nm i2d_RSA_PUBKEY_fp
.Nd decode and encode RSA keys
.Sh SYNOPSIS
.In openssl/rsa.h
.Ft RSA *
.Fo d2i_RSAPublicKey
.Fa "RSA **val_out"
.Fa "const unsigned char **der_in"
.Fa "long length"
.Fc
.Ft int
.Fo i2d_RSAPublicKey
.Fa "RSA *val_in"
.Fa "unsigned char **der_out"
.Fc
.Ft RSA *
.Fo d2i_RSAPrivateKey
.Fa "RSA **val_out"
.Fa "const unsigned char **der_in"
.Fa "long length"
.Fc
.Ft int
.Fo i2d_RSAPrivateKey
.Fa "RSA *val_in"
.Fa "unsigned char **der_out"
.Fc
.Ft RSA *
.Fo d2i_Netscape_RSA
.Fa "RSA **val_out"
.Fa "const unsigned char **der_in"
.Fa "long length"
.Fa "int (*cb)()"
.Fc
.Ft int
.Fo i2d_Netscape_RSA
.Fa "RSA *val_in"
.Fa "unsigned char **der_out"
.Fa "int (*cb)()"
.Fc
.In openssl/x509.h
.Ft RSA *
.Fo d2i_RSAPublicKey_bio
.Fa "BIO *in_bio"
.Fa "RSA **val_out"
.Fc
.Ft RSA *
.Fo d2i_RSAPublicKey_fp
.Fa "FILE *in_fp"
.Fa "RSA **val_out"
.Fc
.Ft int
.Fo i2d_RSAPublicKey_bio
.Fa "BIO *out_bio"
.Fa "RSA *val_in"
.Fc
.Ft int
.Fo i2d_RSAPublicKey_fp
.Fa "FILE *out_fp"
.Fa "RSA *val_in"
.Fc
.Ft RSA *
.Fo d2i_RSAPrivateKey_bio
.Fa "BIO *in_bio"
.Fa "RSA **val_out"
.Fc
.Ft RSA *
.Fo d2i_RSAPrivateKey_fp
.Fa "FILE *in_fp"
.Fa "RSA **val_out"
.Fc
.Ft int
.Fo i2d_RSAPrivateKey_bio
.Fa "BIO *out_bio"
.Fa "RSA *val_in"
.Fc
.Ft int
.Fo i2d_RSAPrivateKey_fp
.Fa "FILE *out_fp"
.Fa "RSA *val_in"
.Fc
.Ft RSA *
.Fo d2i_RSA_PUBKEY
.Fa "RSA **val_out"
.Fa "const unsigned char **der_in"
.Fa "long length"
.Fc
.Ft int
.Fo i2d_RSA_PUBKEY
.Fa "RSA *val_in"
.Fa "unsigned char **der_out"
.Fc
.Ft RSA *
.Fo d2i_RSA_PUBKEY_bio
.Fa "BIO *in_bio"
.Fa "RSA **val_out"
.Fc
.Ft RSA *
.Fo d2i_RSA_PUBKEY_fp
.Fa "FILE *in_fp"
.Fa "RSA **val_out"
.Fc
.Ft int
.Fo i2d_RSA_PUBKEY_bio
.Fa "BIO *out_bio"
.Fa "RSA *val_in"
.Fc
.Ft int
.Fo i2d_RSA_PUBKEY_fp
.Fa "FILE *out_fp"
.Fa "RSA *val_in"
.Fc
.Sh DESCRIPTION
These functions decode and encode RSA private and public keys.
For details about the semantics, examples, caveats, and bugs, see
.Xr ASN1_item_d2i 3 .
.Pp
.Fn d2i_RSAPublicKey
and
.Fn i2d_RSAPublicKey
decode and encode a PKCS#1
.Vt RSAPublicKey
structure.
.Fn d2i_RSAPublicKey_bio ,
.Fn d2i_RSAPublicKey_fp ,
.Fn i2d_RSAPublicKey_bio ,
and
.Fn i2d_RSAPublicKey_fp
are similar except that they decode or encode using a
.Vt BIO
or
.Vt FILE
pointer.
.Pp
.Fn d2i_RSAPrivateKey
and
.Fn i2d_RSAPrivateKey
decode and encode a PKCS#1
.Vt RSAPrivateKey
structure.
The
.Vt RSA
structure passed to the private key encoding functions should have
all the PKCS#1 private key components present.
The data encoded by the private key functions is unencrypted and
therefore offers no private key security.
.Fn d2i_RSAPrivateKey_bio ,
.Fn d2i_RSAPrivateKey_fp ,
.Fn i2d_RSAPrivateKey_bio ,
and
.Fn i2d_RSAPrivateKey_fp
are similar except that they decode or encode using a
.Vt BIO
or
.Vt FILE
pointer.
.Pp
.Fn d2i_Netscape_RSA
and
.Fn i2d_Netscape_RSA
decode and encode an RSA private key in NET format.
These functions are present to provide compatibility with
certain very old software.
The NET format has some severe security weaknesses and should be
avoided if possible.
.Pp
.Fn d2i_RSA_PUBKEY
and
.Fn i2d_RSA_PUBKEY
decode and encode an RSA public key using an ASN.1
.Vt SubjectPublicKeyInfo
structure.
.Fn d2i_RSA_PUBKEY_bio ,
.Fn d2i_RSA_PUBKEY_fp ,
.Fn i2d_RSA_PUBKEY_bio ,
and
.Fn i2d_RSA_PUBKEY_fp
are similar except that they decode or encode using a
.Vt BIO
or
.Vt FILE
pointer.
.Sh RETURN VALUES
.Fn d2i_RSAPublicKey ,
.Fn d2i_RSAPublicKey_bio ,
.Fn d2i_RSAPublicKey_fp ,
.Fn d2i_RSAPrivateKey ,
.Fn d2i_RSAPrivateKey_bio ,
.Fn d2i_RSAPrivateKey_fp ,
.Fn d2i_Netscape_RSA ,
.Fn d2i_RSA_PUBKEY ,
.Fn d2i_RSA_PUBKEY_bio ,
and
.Fn d2i_RSA_PUBKEY_fp
return a valid
.Vt RSA
object or
.Dv NULL
if an error occurs.
.Pp
.Fn i2d_RSAPublicKey ,
.Fn i2d_RSAPrivateKey ,
.Fn i2d_Netscape_RSA ,
and
.Fn i2d_RSA_PUBKEY
return the number of bytes successfully encoded or a negative value
if an error occurs.
.Pp
.Fn i2d_RSAPublicKey_bio ,
.Fn i2d_RSAPublicKey_fp ,
.Fn i2d_RSAPrivateKey_bio ,
.Fn i2d_RSAPrivateKey_fp ,
.Fn i2d_RSA_PUBKEY_bio ,
and
.Fn i2d_RSA_PUBKEY_fp
return 1 for success or 0 if an error occurs.
.Sh SEE ALSO
.Xr ASN1_item_d2i 3 ,
.Xr EVP_PKEY_set1_RSA 3 ,
.Xr PEM_write_RSAPrivateKey 3 ,
.Xr RSA_new 3 ,
.Xr X509_PUBKEY_new 3