kepocnhh

#!/usr/local/bin/bash

if test $# -ne 2; then
 echo "Script needs for 2 arguments but actual $#!"; exit 12; fi

SRC="$1"
DST="$2"

if [[ ! -d "$SRC" ]]; then echo "SRC: $SRC is not a dir!"; exit 1; fi
if [[ ! -d "$DST" ]]; then echo "DST: $DST is not a dir!"; exit 1; fi

kepocnhh

fun toInt(b1: Byte, b2: Byte, b3: Byte, b4: Byte): Int {
    return b1.toInt().and(0xff).shl(8 * 3)
    	.or(b2.toInt().and(0xff).shl(8 * 2))
    	.or(b3.toInt().and(0xff).shl(8 * 1))
    	.or(b4.toInt().and(0xff))
}

// 0        1        2        3
// 01234567 01234567 01234567 01234567

kepocnhh

PU - Public Key
PK - Private Key
SK - Secret Key
SID - Session ID
P - Payload

---

kepocnhh

#!/usr/local/bin/bash

# d=256
d=512
g="$(((RANDOM % d) + 1))"
p="$(((RANDOM % d) + 1))"

echo ''
echo 'public:'
echo "g = $g"

kepocnhh

#!/usr/local/bin/bash

echo 'Enter service name (default is common):'
read SERVICE_NAME || exit 1

if test -z "$SERVICE_NAME"; then
 SERVICE_NAME='common'; fi

echo 'Enter account name:'
read ACCOUNT_NAME || exit 1

kepocnhh

KEYCHAIN='keychain_baz'

# https://www.unix.com/man-page/osx/1/security/

security delete-keychain "$KEYCHAIN"
security create-keychain -P "$KEYCHAIN"
if test $? -ne 0; then
 echo 'Create keychain error!'; exit 1; fi

SERVICE_NAME='service_foo'

kepocnhh

SERVICE_NAME='service_foo'
ACCOUNT_NAME='account_bar'
PASSWORD_VALUE='password_bar'

security delete-generic-password -s "$SERVICE_NAME" -a "$ACCOUNT_NAME" &> /dev/null

# Add a generic password item to the default keychain.

security add-generic-password -s "$SERVICE_NAME" -a "$ACCOUNT_NAME" -w "$PASSWORD_VALUE" -T ''
if test $? -ne 0; then

kepocnhh

SERVICE_NAME='service_foo'
ACCOUNT_NAME='account_bar'
PASSWORD_VALUE='password_bar'

security delete-generic-password -s "$SERVICE_NAME" -a "$ACCOUNT_NAME" &> /dev/null

# Add a generic password item to the default keychain without warning.

security add-generic-password -s "$SERVICE_NAME" -a "$ACCOUNT_NAME" -w "$PASSWORD_VALUE"
if test $? -ne 0; then

kepocnhh

sealed interface ExtraType<T : Any>
object Str : ExtraType<String>
object Int32 : ExtraType<Int>
object Int64 : ExtraType<Long>

private fun <T : Any> Bundle.getOrNull(type: ExtraType<T>, key: String): T? {
    if (!containsKey(key)) return null
    return when (type) {
        Str -> getString(key, null) as T?
        Int64 -> getLong(key, -1) as T

kepocnhh

#!/usr/local/bin/bash

if test $# -ne 2; then
 echo "Script needs 2 arguments: ENCRYPTED, KEY. But actual is $#!"; exit 1; fi

ENCRYPTED="$1"
KEY="$2"

for it in ENCRYPTED KEY; do
 if test -z "${!it}"; then echo "Argument \"$it\" is empty!"; exit 1; fi; done