/home/kueuepay/public_html/vendor/paragonie/sodium_compat/src/Core/BLAKE2b.php
<?php
if (class_exists('ParagonIE_Sodium_Core_BLAKE2b', false)) {
return;
}
/**
* Class ParagonIE_Sodium_Core_BLAKE2b
*
* Based on the work of Devi Mandiri in devi/salt.
*/
abstract class ParagonIE_Sodium_Core_BLAKE2b extends ParagonIE_Sodium_Core_Util
{
/**
* @var SplFixedArray
*/
protected static $iv;
/**
* @var array<int, array<int, int>>
*/
protected static $sigma = array(
array( 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15),
array( 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3),
array( 11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4),
array( 7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8),
array( 9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13),
array( 2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9),
array( 12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11),
array( 13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10),
array( 6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5),
array( 10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13 , 0),
array( 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15),
array( 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3)
);
const BLOCKBYTES = 128;
const OUTBYTES = 64;
const KEYBYTES = 64;
/**
* Turn two 32-bit integers into a fixed array representing a 64-bit integer.
*
* @internal You should not use this directly from another application
*
* @param int $high
* @param int $low
* @return SplFixedArray
* @psalm-suppress MixedAssignment
*/
public static function new64($high, $low)
{
if (PHP_INT_SIZE === 4) {
throw new SodiumException("Error, use 32-bit");
}
$i64 = new SplFixedArray(2);
$i64[0] = $high & 0xffffffff;
$i64[1] = $low & 0xffffffff;
return $i64;
}
/**
* Convert an arbitrary number into an SplFixedArray of two 32-bit integers
* that represents a 64-bit integer.
*
* @internal You should not use this directly from another application
*
* @param int $num
* @return SplFixedArray
*/
protected static function to64($num)
{
list($hi, $lo) = self::numericTo64BitInteger($num);
return self::new64($hi, $lo);
}
/**
* Adds two 64-bit integers together, returning their sum as a SplFixedArray
* containing two 32-bit integers (representing a 64-bit integer).
*
* @internal You should not use this directly from another application
*
* @param SplFixedArray $x
* @param SplFixedArray $y
* @return SplFixedArray
* @psalm-suppress MixedArgument
* @psalm-suppress MixedAssignment
* @psalm-suppress MixedOperand
*/
protected static function add64($x, $y)
{
if (PHP_INT_SIZE === 4) {
throw new SodiumException("Error, use 32-bit");
}
$l = ($x[1] + $y[1]) & 0xffffffff;
return self::new64(
(int) ($x[0] + $y[0] + (
($l < $x[1]) ? 1 : 0
)),
(int) $l
);
}
/**
* @internal You should not use this directly from another application
*
* @param SplFixedArray $x
* @param SplFixedArray $y
* @param SplFixedArray $z
* @return SplFixedArray
*/
protected static function add364($x, $y, $z)
{
return self::add64($x, self::add64($y, $z));
}
/**
* @internal You should not use this directly from another application
*
* @param SplFixedArray $x
* @param SplFixedArray $y
* @return SplFixedArray
* @throws SodiumException
* @throws TypeError
*/
protected static function xor64(SplFixedArray $x, SplFixedArray $y)
{
if (PHP_INT_SIZE === 4) {
throw new SodiumException("Error, use 32-bit");
}
if (!is_numeric($x[0])) {
throw new SodiumException('x[0] is not an integer');
}
if (!is_numeric($x[1])) {
throw new SodiumException('x[1] is not an integer');
}
if (!is_numeric($y[0])) {
throw new SodiumException('y[0] is not an integer');
}
if (!is_numeric($y[1])) {
throw new SodiumException('y[1] is not an integer');
}
return self::new64(
(int) (($x[0] ^ $y[0]) & 0xffffffff),
(int) (($x[1] ^ $y[1]) & 0xffffffff)
);
}
/**
* @internal You should not use this directly from another application
*
* @param SplFixedArray $x
* @param int $c
* @return SplFixedArray
* @psalm-suppress MixedAssignment
*/
public static function rotr64($x, $c)
{
if (PHP_INT_SIZE === 4) {
throw new SodiumException("Error, use 32-bit");
}
if ($c >= 64) {
$c %= 64;
}
if ($c >= 32) {
/** @var int $tmp */
$tmp = $x[0];
$x[0] = $x[1];
$x[1] = $tmp;
$c -= 32;
}
if ($c === 0) {
return $x;
}
$l0 = 0;
$c = 64 - $c;
/** @var int $c */
if ($c < 32) {
$h0 = ((int) ($x[0]) << $c) | (
(
(int) ($x[1]) & ((1 << $c) - 1)
<<
(32 - $c)
) >> (32 - $c)
);
$l0 = (int) ($x[1]) << $c;
} else {
$h0 = (int) ($x[1]) << ($c - 32);
}
$h1 = 0;
$c1 = 64 - $c;
if ($c1 < 32) {
$h1 = (int) ($x[0]) >> $c1;
$l1 = ((int) ($x[1]) >> $c1) | ((int) ($x[0]) & ((1 << $c1) - 1)) << (32 - $c1);
} else {
$l1 = (int) ($x[0]) >> ($c1 - 32);
}
return self::new64($h0 | $h1, $l0 | $l1);
}
/**
* @internal You should not use this directly from another application
*
* @param SplFixedArray $x
* @return int
* @psalm-suppress MixedOperand
*/
protected static function flatten64($x)
{
return (int) ($x[0] * 4294967296 + $x[1]);
}
/**
* @internal You should not use this directly from another application
*
* @param SplFixedArray $x
* @param int $i
* @return SplFixedArray
* @psalm-suppress MixedArgument
* @psalm-suppress MixedArrayOffset
*/
protected static function load64(SplFixedArray $x, $i)
{
/** @var int $l */
$l = (int) ($x[$i])
| ((int) ($x[$i+1]) << 8)
| ((int) ($x[$i+2]) << 16)
| ((int) ($x[$i+3]) << 24);
/** @var int $h */
$h = (int) ($x[$i+4])
| ((int) ($x[$i+5]) << 8)
| ((int) ($x[$i+6]) << 16)
| ((int) ($x[$i+7]) << 24);
return self::new64($h, $l);
}
/**
* @internal You should not use this directly from another application
*
* @param SplFixedArray $x
* @param int $i
* @param SplFixedArray $u
* @return void
* @psalm-suppress MixedAssignment
*/
protected static function store64(SplFixedArray $x, $i, SplFixedArray $u)
{
$maxLength = $x->getSize() - 1;
for ($j = 0; $j < 8; ++$j) {
/*
[0, 1, 2, 3, 4, 5, 6, 7]
... becomes ...
[0, 0, 0, 0, 1, 1, 1, 1]
*/
/** @var int $uIdx */
$uIdx = ((7 - $j) & 4) >> 2;
$x[$i] = ((int) ($u[$uIdx]) & 0xff);
if (++$i > $maxLength) {
return;
}
/** @psalm-suppress MixedOperand */
$u[$uIdx] >>= 8;
}
}
/**
* This just sets the $iv static variable.
*
* @internal You should not use this directly from another application
*
* @return void
*/
public static function pseudoConstructor()
{
static $called = false;
if ($called) {
return;
}
self::$iv = new SplFixedArray(8);
self::$iv[0] = self::new64(0x6a09e667, 0xf3bcc908);
self::$iv[1] = self::new64(0xbb67ae85, 0x84caa73b);
self::$iv[2] = self::new64(0x3c6ef372, 0xfe94f82b);
self::$iv[3] = self::new64(0xa54ff53a, 0x5f1d36f1);
self::$iv[4] = self::new64(0x510e527f, 0xade682d1);
self::$iv[5] = self::new64(0x9b05688c, 0x2b3e6c1f);
self::$iv[6] = self::new64(0x1f83d9ab, 0xfb41bd6b);
self::$iv[7] = self::new64(0x5be0cd19, 0x137e2179);
$called = true;
}
/**
* Returns a fresh BLAKE2 context.
*
* @internal You should not use this directly from another application
*
* @return SplFixedArray
* @psalm-suppress MixedAssignment
* @psalm-suppress MixedArrayAccess
* @psalm-suppress MixedArrayAssignment
*/
protected static function context()
{
$ctx = new SplFixedArray(6);
$ctx[0] = new SplFixedArray(8); // h
$ctx[1] = new SplFixedArray(2); // t
$ctx[2] = new SplFixedArray(2); // f
$ctx[3] = new SplFixedArray(256); // buf
$ctx[4] = 0; // buflen
$ctx[5] = 0; // last_node (uint8_t)
for ($i = 8; $i--;) {
$ctx[0][$i] = self::$iv[$i];
}
for ($i = 256; $i--;) {
$ctx[3][$i] = 0;
}
$zero = self::new64(0, 0);
$ctx[1][0] = $zero;
$ctx[1][1] = $zero;
$ctx[2][0] = $zero;
$ctx[2][1] = $zero;
return $ctx;
}
/**
* @internal You should not use this directly from another application
*
* @param SplFixedArray $ctx
* @param SplFixedArray $buf
* @return void
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress MixedAssignment
* @psalm-suppress MixedArrayAccess
* @psalm-suppress MixedArrayAssignment
* @psalm-suppress MixedArrayOffset
*/
protected static function compress(SplFixedArray $ctx, SplFixedArray $buf)
{
$m = new SplFixedArray(16);
$v = new SplFixedArray(16);
for ($i = 16; $i--;) {
$m[$i] = self::load64($buf, $i << 3);
}
for ($i = 8; $i--;) {
$v[$i] = $ctx[0][$i];
}
$v[ 8] = self::$iv[0];
$v[ 9] = self::$iv[1];
$v[10] = self::$iv[2];
$v[11] = self::$iv[3];
$v[12] = self::xor64($ctx[1][0], self::$iv[4]);
$v[13] = self::xor64($ctx[1][1], self::$iv[5]);
$v[14] = self::xor64($ctx[2][0], self::$iv[6]);
$v[15] = self::xor64($ctx[2][1], self::$iv[7]);
for ($r = 0; $r < 12; ++$r) {
$v = self::G($r, 0, 0, 4, 8, 12, $v, $m);
$v = self::G($r, 1, 1, 5, 9, 13, $v, $m);
$v = self::G($r, 2, 2, 6, 10, 14, $v, $m);
$v = self::G($r, 3, 3, 7, 11, 15, $v, $m);
$v = self::G($r, 4, 0, 5, 10, 15, $v, $m);
$v = self::G($r, 5, 1, 6, 11, 12, $v, $m);
$v = self::G($r, 6, 2, 7, 8, 13, $v, $m);
$v = self::G($r, 7, 3, 4, 9, 14, $v, $m);
}
for ($i = 8; $i--;) {
$ctx[0][$i] = self::xor64(
$ctx[0][$i], self::xor64($v[$i], $v[$i+8])
);
}
}
/**
* @internal You should not use this directly from another application
*
* @param int $r
* @param int $i
* @param int $a
* @param int $b
* @param int $c
* @param int $d
* @param SplFixedArray $v
* @param SplFixedArray $m
* @return SplFixedArray
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress MixedArrayOffset
*/
public static function G($r, $i, $a, $b, $c, $d, SplFixedArray $v, SplFixedArray $m)
{
$v[$a] = self::add364($v[$a], $v[$b], $m[self::$sigma[$r][$i << 1]]);
$v[$d] = self::rotr64(self::xor64($v[$d], $v[$a]), 32);
$v[$c] = self::add64($v[$c], $v[$d]);
$v[$b] = self::rotr64(self::xor64($v[$b], $v[$c]), 24);
$v[$a] = self::add364($v[$a], $v[$b], $m[self::$sigma[$r][($i << 1) + 1]]);
$v[$d] = self::rotr64(self::xor64($v[$d], $v[$a]), 16);
$v[$c] = self::add64($v[$c], $v[$d]);
$v[$b] = self::rotr64(self::xor64($v[$b], $v[$c]), 63);
return $v;
}
/**
* @internal You should not use this directly from another application
*
* @param SplFixedArray $ctx
* @param int $inc
* @return void
* @throws SodiumException
* @psalm-suppress MixedArgument
* @psalm-suppress MixedArrayAccess
* @psalm-suppress MixedArrayAssignment
*/
public static function increment_counter($ctx, $inc)
{
if ($inc < 0) {
throw new SodiumException('Increasing by a negative number makes no sense.');
}
$t = self::to64($inc);
# S->t is $ctx[1] in our implementation
# S->t[0] = ( uint64_t )( t >> 0 );
$ctx[1][0] = self::add64($ctx[1][0], $t);
# S->t[1] += ( S->t[0] < inc );
if (self::flatten64($ctx[1][0]) < $inc) {
$ctx[1][1] = self::add64($ctx[1][1], self::to64(1));
}
}
/**
* @internal You should not use this directly from another application
*
* @param SplFixedArray $ctx
* @param SplFixedArray $p
* @param int $plen
* @return void
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress MixedAssignment
* @psalm-suppress MixedArrayAccess
* @psalm-suppress MixedArrayAssignment
* @psalm-suppress MixedArrayOffset
* @psalm-suppress MixedOperand
*/
public static function update(SplFixedArray $ctx, SplFixedArray $p, $plen)
{
self::pseudoConstructor();
$offset = 0;
while ($plen > 0) {
$left = $ctx[4];
$fill = 256 - $left;
if ($plen > $fill) {
# memcpy( S->buf + left, in, fill ); /* Fill buffer */
for ($i = $fill; $i--;) {
$ctx[3][$i + $left] = $p[$i + $offset];
}
# S->buflen += fill;
$ctx[4] += $fill;
# blake2b_increment_counter( S, BLAKE2B_BLOCKBYTES );
self::increment_counter($ctx, 128);
# blake2b_compress( S, S->buf ); /* Compress */
self::compress($ctx, $ctx[3]);
# memcpy( S->buf, S->buf + BLAKE2B_BLOCKBYTES, BLAKE2B_BLOCKBYTES ); /* Shift buffer left */
for ($i = 128; $i--;) {
$ctx[3][$i] = $ctx[3][$i + 128];
}
# S->buflen -= BLAKE2B_BLOCKBYTES;
$ctx[4] -= 128;
# in += fill;
$offset += $fill;
# inlen -= fill;
$plen -= $fill;
} else {
for ($i = $plen; $i--;) {
$ctx[3][$i + $left] = $p[$i + $offset];
}
$ctx[4] += $plen;
$offset += $plen;
$plen -= $plen;
}
}
}
/**
* @internal You should not use this directly from another application
*
* @param SplFixedArray $ctx
* @param SplFixedArray $out
* @return SplFixedArray
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress MixedAssignment
* @psalm-suppress MixedArrayAccess
* @psalm-suppress MixedArrayAssignment
* @psalm-suppress MixedArrayOffset
* @psalm-suppress MixedOperand
*/
public static function finish(SplFixedArray $ctx, SplFixedArray $out)
{
self::pseudoConstructor();
if ($ctx[4] > 128) {
self::increment_counter($ctx, 128);
self::compress($ctx, $ctx[3]);
$ctx[4] -= 128;
if ($ctx[4] > 128) {
throw new SodiumException('Failed to assert that buflen <= 128 bytes');
}
for ($i = $ctx[4]; $i--;) {
$ctx[3][$i] = $ctx[3][$i + 128];
}
}
self::increment_counter($ctx, $ctx[4]);
$ctx[2][0] = self::new64(0xffffffff, 0xffffffff);
for ($i = 256 - $ctx[4]; $i--;) {
$ctx[3][$i+$ctx[4]] = 0;
}
self::compress($ctx, $ctx[3]);
$i = (int) (($out->getSize() - 1) / 8);
for (; $i >= 0; --$i) {
self::store64($out, $i << 3, $ctx[0][$i]);
}
return $out;
}
/**
* @internal You should not use this directly from another application
*
* @param SplFixedArray|null $key
* @param int $outlen
* @param SplFixedArray|null $salt
* @param SplFixedArray|null $personal
* @return SplFixedArray
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress MixedAssignment
* @psalm-suppress MixedArrayAccess
* @psalm-suppress MixedArrayAssignment
* @psalm-suppress MixedArrayOffset
*/
public static function init(
$key = null,
$outlen = 64,
$salt = null,
$personal = null
) {
self::pseudoConstructor();
$klen = 0;
if ($key !== null) {
if (count($key) > 64) {
throw new SodiumException('Invalid key size');
}
$klen = count($key);
}
if ($outlen > 64) {
throw new SodiumException('Invalid output size');
}
$ctx = self::context();
$p = new SplFixedArray(64);
// Zero our param buffer...
for ($i = 64; --$i;) {
$p[$i] = 0;
}
$p[0] = $outlen; // digest_length
$p[1] = $klen; // key_length
$p[2] = 1; // fanout
$p[3] = 1; // depth
if ($salt instanceof SplFixedArray) {
// salt: [32] through [47]
for ($i = 0; $i < 16; ++$i) {
$p[32 + $i] = (int) $salt[$i];
}
}
if ($personal instanceof SplFixedArray) {
// personal: [48] through [63]
for ($i = 0; $i < 16; ++$i) {
$p[48 + $i] = (int) $personal[$i];
}
}
$ctx[0][0] = self::xor64(
$ctx[0][0],
self::load64($p, 0)
);
if ($salt instanceof SplFixedArray || $personal instanceof SplFixedArray) {
// We need to do what blake2b_init_param() does:
for ($i = 1; $i < 8; ++$i) {
$ctx[0][$i] = self::xor64(
$ctx[0][$i],
self::load64($p, $i << 3)
);
}
}
if ($klen > 0 && $key instanceof SplFixedArray) {
$block = new SplFixedArray(128);
for ($i = 128; $i--;) {
$block[$i] = 0;
}
for ($i = $klen; $i--;) {
$block[$i] = $key[$i];
}
self::update($ctx, $block, 128);
$ctx[4] = 128;
}
return $ctx;
}
/**
* Convert a string into an SplFixedArray of integers
*
* @internal You should not use this directly from another application
*
* @param string $str
* @return SplFixedArray
* @psalm-suppress MixedArgumentTypeCoercion
*/
public static function stringToSplFixedArray($str = '')
{
$values = unpack('C*', $str);
return SplFixedArray::fromArray(array_values($values));
}
/**
* Convert an SplFixedArray of integers into a string
*
* @internal You should not use this directly from another application
*
* @param SplFixedArray $a
* @return string
* @throws TypeError
*/
public static function SplFixedArrayToString(SplFixedArray $a)
{
/**
* @var array<int, int|string> $arr
*/
$arr = $a->toArray();
$c = $a->count();
array_unshift($arr, str_repeat('C', $c));
return (string) (call_user_func_array('pack', $arr));
}
/**
* @internal You should not use this directly from another application
*
* @param SplFixedArray $ctx
* @return string
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress MixedAssignment
* @psalm-suppress MixedArrayAccess
* @psalm-suppress MixedArrayAssignment
* @psalm-suppress MixedArrayOffset
* @psalm-suppress MixedMethodCall
*/
public static function contextToString(SplFixedArray $ctx)
{
$str = '';
/** @var array<int, array<int, int>> $ctxA */
$ctxA = $ctx[0]->toArray();
# uint64_t h[8];
for ($i = 0; $i < 8; ++$i) {
$str .= self::store32_le($ctxA[$i][1]);
$str .= self::store32_le($ctxA[$i][0]);
}
# uint64_t t[2];
# uint64_t f[2];
for ($i = 1; $i < 3; ++$i) {
$ctxA = $ctx[$i]->toArray();
$str .= self::store32_le($ctxA[0][1]);
$str .= self::store32_le($ctxA[0][0]);
$str .= self::store32_le($ctxA[1][1]);
$str .= self::store32_le($ctxA[1][0]);
}
# uint8_t buf[2 * 128];
$str .= self::SplFixedArrayToString($ctx[3]);
/** @var int $ctx4 */
$ctx4 = (int) $ctx[4];
# size_t buflen;
$str .= implode('', array(
self::intToChr($ctx4 & 0xff),
self::intToChr(($ctx4 >> 8) & 0xff),
self::intToChr(($ctx4 >> 16) & 0xff),
self::intToChr(($ctx4 >> 24) & 0xff),
self::intToChr(($ctx4 >> 32) & 0xff),
self::intToChr(($ctx4 >> 40) & 0xff),
self::intToChr(($ctx4 >> 48) & 0xff),
self::intToChr(($ctx4 >> 56) & 0xff)
));
# uint8_t last_node;
return $str . self::intToChr($ctx[5]) . str_repeat("\x00", 23);
}
/**
* Creates an SplFixedArray containing other SplFixedArray elements, from
* a string (compatible with \Sodium\crypto_generichash_{init, update, final})
*
* @internal You should not use this directly from another application
*
* @param string $string
* @return SplFixedArray
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArrayAssignment
*/
public static function stringToContext($string)
{
$ctx = self::context();
# uint64_t h[8];
for ($i = 0; $i < 8; ++$i) {
$ctx[0][$i] = SplFixedArray::fromArray(
array(
self::load_4(
self::substr($string, (($i << 3) + 4), 4)
),
self::load_4(
self::substr($string, (($i << 3) + 0), 4)
)
)
);
}
# uint64_t t[2];
# uint64_t f[2];
for ($i = 1; $i < 3; ++$i) {
$ctx[$i][1] = SplFixedArray::fromArray(
array(
self::load_4(self::substr($string, 76 + (($i - 1) << 4), 4)),
self::load_4(self::substr($string, 72 + (($i - 1) << 4), 4))
)
);
$ctx[$i][0] = SplFixedArray::fromArray(
array(
self::load_4(self::substr($string, 68 + (($i - 1) << 4), 4)),
self::load_4(self::substr($string, 64 + (($i - 1) << 4), 4))
)
);
}
# uint8_t buf[2 * 128];
$ctx[3] = self::stringToSplFixedArray(self::substr($string, 96, 256));
# uint8_t buf[2 * 128];
$int = 0;
for ($i = 0; $i < 8; ++$i) {
$int |= self::chrToInt($string[352 + $i]) << ($i << 3);
}
$ctx[4] = $int;
return $ctx;
}
}
Kueue Pay | Contactless Payment System
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Secure, Swift, and Smart Payments with NFCPay !
With NFC Pay, experience seamless and secure transactions right at your fingertips. Add your cards, load your wallet, and make payments effortlessly. Activate your merchant account to receive payments or transfer money instantly to other users. NFC Pay combines security, speed, and smart features, making every transaction smooth and reliable. Embrace the future of payments with NFC Pay.
Quick Steps to NFC Pay
Getting started with NFC Pay is simple and quick. Register your account, add your cards, and you're ready to make payments in no time. Whether you're paying at a store, sending money to a friend, or managing your merchant transactions, NFC Pay makes it easy and secure.
1
Register Your Account
Download the NFC Pay app and sign up with your email or phone number. Complete the registration process by verifying your identity, and set up your secure PIN to protect your account.
2
Add Your Cards
Link your debit or credit cards to your NFC Pay wallet. Simply scan your card or enter the details manually, and you’re set to load funds, shop, and pay with ease.
3
Make Payment
To pay, simply tap your phone or scan the QR code at checkout. You can also transfer money to other users with a few taps. Enjoy fast, contactless payments with top-notch security.
Advanced Security Features Designed to Protect Your Information Effectively
NFC Pay prioritizes your security with advanced features that safeguard every transaction. From SMS or email verification to end-to-end encryption, we've implemented robust measures to ensure your data is always protected. Our security systems are designed to prevent unauthorized access and provide you with a safe and reliable payment experience.
SMS or Email Verification
Receive instant alerts for every transaction to keep track of your account activities.
KYC Solution
Verify your identity through our Know Your Customer process to prevent fraud and enhance security.
Two Factor Authentication
Dramatically supply transparent backward deliverables before caward comp internal or "organic" sources.
End-to-End Encryption
All your data and transactions are encrypted, ensuring that your sensitive information remains private.
Behavior Tracking
Monitor unusual activity patterns to detect and prevent suspicious behavior in real-time.
Top Reasons to Choose Us for Reliable and Expert Solutions
With NFC Pay, you get a trusted platform backed by proven expertise and a commitment to quality. We put our customers first, offering innovative solutions tailored to your needs, ensuring every transaction is secure, swift, and seamless.
1
Proven Expertise
Our team brings years of experience in the digital payments industry to provide reliable services.
2
Commitment to Quality
We prioritize excellence, ensuring that every aspect of our platform meets the highest standards.
3
Customer-Centric Approach
Your needs drive our solutions, and we are dedicated to delivering a superior user experience.
4
Innovative Solutions
We continuously evolve, integrating the latest technologies to enhance your payment experience.
Customer Feedback: Real Experiences from Satisfied Clients and Partners
Hear from our users who trust NFC Pay for their everyday transactions. Our commitment to security, ease of use, and exceptional service shines through in their experiences. See why our clients choose NFC Pay for their payment needs and how it has transformed the way they manage their finances.
"NFC Pay has made my transactions incredibly simple and secure. The intuitive interface and quick payment options are game-changers for my business"
"I love how NFC Pay prioritizes security without compromising on convenience. The two-factor authentication and instant alerts give me peace of mind every time I use it."
"Setting up my merchant account was a breeze, and now I can accept payments effortlessly. NFC Pay has truly streamlined my operations, saving me time and hassle."
Get the NFC Pay App for Seamless Transactions Anytime, Anywhere
Unlock the full potential of NFC Pay by downloading our app, designed to bring secure, swift, and smart transactions to your fingertips. Whether you're paying at a store, transferring money to friends, or managing your business payments, the NFC Pay app makes it effortless. Available on both iOS and Android, it's your all-in-one solution for convenient and reliable digital payments. Download now and experience the future of payments!
In the digital age, privacy concerns have become increasingly paramount, prompting the European Union to enact the General Data Protection Regulation (GDPR) in 2018. Among its many provisions, GDPR sets strict guidelines for the collection and processing of personal data, including the use of cookies on websites. Privacy Policy
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