/ 
Crypt-Sodium-XS-0.000021
/ Crypt::Sodium::XS::stream
Security Advisories (2)
CVE-2025-15444 (2026-01-06)

Crypt::Sodium::XS module versions prior to 0.000042, for Perl, include a vulnerable version of libsodium libsodium <= 1.0.20 or a version of libsodium released before December 30, 2025 contains a vulnerability documented as CVE-2025-69277  https://www.cve.org/CVERecord?id=CVE-2025-69277 . The libsodium vulnerability states: In atypical use cases involving certain custom cryptography or untrusted data to crypto_core_ed25519_is_valid_point, mishandles checks for whether an elliptic curve point is valid because it sometimes allows points that aren't in the main cryptographic group. 0.000042 includes a version of libsodium updated to 1.0.20-stable, released January 3, 2026, which includes a fix for the vulnerability.

CVE-2026-30910 (2026-03-08)

Crypt::Sodium::XS versions through 0.001000 for Perl has potential integer overflows. Combined aead encryption, combined signature creation, and bin2hex functions do not check that output size will be less than SIZE_MAX, which could lead to integer wraparound causing an undersized output buffer. This can cause a crash in bin2hex and encryption algorithms other than aes256gcm. For aes256gcm encryption and signatures, an undersized buffer could lead to buffer overflow. Encountering this issue is unlikely as the message length would need to be very large. For bin2hex the input size would have to be > SIZE_MAX / 2 For aegis encryption the input size would need to be > SIZE_MAX - 32U For other encryption the input size would need to be > SIZE_MAX - 16U For signatures the input size would need to be > SIZE_MAX - 64U

NAME

Crypt::Sodium::XS::stream - Stream ciphers

SYNOPSIS

use Crypt::Sodium::XS::stream ":default";

DESCRIPTION

These functions are stream ciphers. They do not provide authenticated encryption. They can be used to generate pseudo-random data from a key, or as building blocks for implementing custom constructions, but they are not alternatives to Crypt::Sodium::XS::secretbox.

FUNCTIONS

Nothing is exported by default. A :default tag imports the functions and constants as documented below. A separate import tag is provided for each of the primitives listed in "PRIMITIVES". For example, :chacha20 imports stream_chacha20_xor. You should use at least one import tag.

stream_keygen

my $key = stream_keygen();

stream_nonce

my $nonce = stream_nonce();

stream

my $stream_data = stream($length, $nonce, $key);

stream_xor

my $ciphertext = stream_xor($plaintext, $nonce, $key);

stream_xor_ic

my $ciphertext = stream_xor_ic($plaintext, $nonce, $internal_counter, $key);

CONSTANTS

stream_KEYBYTES

my $key_length = stream_KEYBYTES();

stream_MESSAGEBYTES_MAX

my $plaintext_max_length = stream_MESSAGEBYTES_MAX();

stream_NONCEBYTES

my $nonce_length = stream_NONCEBYTES();

PRIMITIVES

Except for salsa2012, which does not provide an xor_ic function, all constants (except _PRIMITIVE) and functions have stream_<primitive>-prefixed counterparts (e.g., stream_chacha20_ietf_xor_ic, stream_salsa2012_KEYBYTES).

  • chacha20

  • chacha20_ietf

  • salsa20

  • salsa2012

  • xchacha20

  • xsalsa20

SEE ALSO

Crypt::Sodium::XS
Crypt::Sodium::XS::OO::stream
https://doc.libsodium.org/advanced/stream_ciphers
https://doc.libsodium.org/advanced/stream_ciphers/chacha20
https://doc.libsodium.org/advanced/stream_ciphers/xchacha20
https://doc.libsodium.org/advanced/stream_ciphers/salsa20
https://doc.libsodium.org/advanced/stream_ciphers/xsalsa20

FEEDBACK

For reporting bugs, giving feedback, submitting patches, etc. please use the following:

  • IRC channel #sodium on irc.perl.org.

  • Email the author directly.

For any security sensitive reports, please email the author directly or contact privately via IRC.

AUTHOR

Brad Barden <perlmodules@5c30.org>

COPYRIGHT & LICENSE

Copyright (c) 2022 Brad Barden. All rights reserved.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

1 POD Error

The following errors were encountered while parsing the POD:

Around line 166:

You forgot a '=back' before '=head1'