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| 1 | .\" $OpenBSD: ASN1_item_pack.3,v 1.1 2021/11/15 11:51:09 schwarze Exp $ | ||
| 2 | .\" | ||
| 3 | .\" Copyright (c) 2021 Ingo Schwarze <schwarze@openbsd.org> | ||
| 4 | .\" | ||
| 5 | .\" Permission to use, copy, modify, and distribute this software for any | ||
| 6 | .\" purpose with or without fee is hereby granted, provided that the above | ||
| 7 | .\" copyright notice and this permission notice appear in all copies. | ||
| 8 | .\" | ||
| 9 | .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | ||
| 10 | .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | ||
| 11 | .\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | ||
| 12 | .\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | ||
| 13 | .\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | ||
| 14 | .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | ||
| 15 | .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | ||
| 16 | .\" | ||
| 17 | .Dd $Mdocdate: November 15 2021 $ | ||
| 18 | .Dt ASN1_ITEM_PACK 3 | ||
| 19 | .Os | ||
| 20 | .Sh NAME | ||
| 21 | .Nm ASN1_item_pack , | ||
| 22 | .Nm ASN1_item_unpack | ||
| 23 | .Nd pack an ASN.1 object into an ASN1_STRING | ||
| 24 | .Sh SYNOPSIS | ||
| 25 | .In openssl/asn1.h | ||
| 26 | .Ft ASN1_STRING * | ||
| 27 | .Fo ASN1_item_pack | ||
| 28 | .Fa "void *val_in" | ||
| 29 | .Fa "const ASN1_ITEM *it" | ||
| 30 | .Fa "ASN1_STRING **string_out" | ||
| 31 | .Fc | ||
| 32 | .Ft void * | ||
| 33 | .Fo ASN1_item_unpack | ||
| 34 | .Fa "const ASN1_STRING *string_in" | ||
| 35 | .Fa "const ASN1_ITEM *it" | ||
| 36 | .Fc | ||
| 37 | .Sh DESCRIPTION | ||
| 38 | .Fn ASN1_item_pack | ||
| 39 | encodes the object pointed to by | ||
| 40 | .Fa val_in | ||
| 41 | into DER format using | ||
| 42 | .Xr ASN1_item_i2d 3 | ||
| 43 | and stores the encoded form in | ||
| 44 | .Pf ** Fa string_out . | ||
| 45 | If | ||
| 46 | .Fa string_out | ||
| 47 | or | ||
| 48 | .Pf * Fa string_out | ||
| 49 | is a | ||
| 50 | .Dv NULL | ||
| 51 | pointer, a new | ||
| 52 | .Vt ASN1_STRING | ||
| 53 | object is allocated and returned. | ||
| 54 | .Pp | ||
| 55 | .Fn ASN1_item_unpack | ||
| 56 | interprets the data in | ||
| 57 | .Fa string_in | ||
| 58 | as a DER- or BER-encoded byte array and decodes one value of the type | ||
| 59 | .Fa it | ||
| 60 | into a newly allocated object using | ||
| 61 | .Xr ASN1_item_d2i 3 . | ||
| 62 | .Sh RETURN VALUES | ||
| 63 | .Fn ASN1_item_pack | ||
| 64 | returns the modified or new object or | ||
| 65 | .Dv NULL | ||
| 66 | if memory allocation or encoding fails. | ||
| 67 | .Pp | ||
| 68 | .Fn ASN1_item_unpack | ||
| 69 | returns the new object or | ||
| 70 | .Dv NULL | ||
| 71 | if memory allocation or decoding fails. | ||
| 72 | .Sh SEE ALSO | ||
| 73 | .Xr ASN1_item_d2i 3 , | ||
| 74 | .Xr ASN1_item_new 3 , | ||
| 75 | .Xr ASN1_STRING_new 3 | ||
| 76 | .Sh HISTORY | ||
| 77 | .Fn ASN1_item_pack | ||
| 78 | and | ||
| 79 | .Fn ASN1_item_unpack | ||
| 80 | first appeared in OpenSSL 0.9.7 and have been available since | ||
| 81 | .Ox 3.2 . | ||
| 82 | .Sh BUGS | ||
| 83 | See the BUGS section in | ||
| 84 | .Xr ASN1_item_i2d 3 . | ||