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ecctools

Небольшая коллекция инструментов, написанных на C для выполнения математических операций с приватными и публичными ключами.

Предупреждение

  • Этот репозиторий включает небольшую библиотеку криптографии ECDSA.
  • Эта библиотека была сделана по документации, но в ней могут быть ошибки.
  • Используйте его на свой страх и риск.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

Список инструментов в этом репозитории

Как скачать и запустить код?

Для пользователей Termux вам необходимо установить некоторые утилиты

apt update && apt upgrade
apt install root-repo
apt install git -y
apt install build-essential -y
apt install libssl-dev
apt install libgcrypt20-dev
apt install libgmp-dev

Клонировать этот репозиторий:

git clone https://github.com/CookLand/ecctools.git

Скомпилировать командой:

make

calculatefromkey

A easy way to check the address and publickeys from a privatekey

what is the objective of this tool? just to check a privatekey and his address and publickey

Example of use

./calculatefromkey ca12010ce2daaf02611d440acd42e8bc791881375c58197cf56995059b28e797

Output:

privatekey: ca12010ce2daaf02611d440acd42e8bc791881375c58197cf56995059b28e797
publickey compressed: 035f149fb58e6eb5a7bcc812c1f72e5c9a3ee7ea151991a31a4d3e98e5ace25568
public address compressed 16Ln3w1JLD8s7rNni37A7SiVmVPHXEHFWF
publickey uncompressed: 045f149fb58e6eb5a7bcc812c1f72e5c9a3ee7ea151991a31a4d3e98e5ace2556850fc0b339809eda8cc9f74ee698ed018049b0cfbefe72e66dbc256622f1662d7
public address uncompressed 1NKUnTCtN3Pbm3wEVsFZFuotKkjPPi4g3B

calculatefrompublickey

A easy way to check the address from a publickey

What is the objetive of this tool? just check wha are the address from a publickey.

Example of use

./calculatefromkey ca12010ce2daaf02611d440acd42e8bc791881375c58197cf56995059b28e797

Output:

address 16Ln3w1JLD8s7rNni37A7SiVmVPHXEHFWF

keymath

Keymath is basically an arithmetic calculator por publickeys with only four operations:

  • addition
  • subtration
  • multiplication by an scalar number
  • division by an scalar number

previous example:

./keymath 03a301697bdfcd704313ba48e51d567543f2a182031efd6915ddc07bbcc4e16070 / 4

output: Result: 03f694cbaf2b966c1cc5f7f829d3a907819bc70ebcc1b229d9e81bda2712998b10

this is the first line of the keydivision example, their privatekey is 0x1000000000000000000000000000000 bewteen 4 equals to 0x400000000000000000000000000000

./keymath 03f694cbaf2b966c1cc5f7f829d3a907819bc70ebcc1b229d9e81bda2712998b10 / 4

output: Result: 02e80fea14441fb33a7d8adab9475d7fab2019effb5156a792f1a11778e3c0df5d

from here you can do your calculations by your self

multiplication by an scalar number

The multiplication and the division only can be done with a number you can't multiply or divide two publickeys

./keymath 033ab6bde10cd3ac0cd06883fa66f0b0e3eb1309c0534b812286e2a30ca540db99 x 64

Result: 03a301697bdfcd704313ba48e51d567543f2a182031efd6915ddc07bbcc4e16070

modmath

this is an arithmetic calculator but all operations are modulo N, this is Modulo 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141

Did you remember that i write before: "not exact the result will be in an unknow place in the curve" I lie, we can know more or less where those result are but even with this information we can't find values when we don't know the PrivateKey value.

./modmath 1 / 2

Output:

Result: 7fffffffffffffffffffffffffffffff5d576e7357a4501ddfe92f46681b20a1

./modmath 3 / 2

Output:

Result: 7fffffffffffffffffffffffffffffff5d576e7357a4501ddfe92f46681b20a2

if you see those privatekeys are sequentially, Lest to divide the publickeys of 1 and 3 by 2

./keymath 0279be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798 / 2

output: Result: 0200000000000000000000003b78ce563f89a0ed9414f5aa28ad0d96d6795f9c63

./keymath 02f9308a019258c31049344f85f89d5229b531c845836f99b08601f113bce036f9 / 2

output: Result: 02c62c910e502cb615a27c58512b6cc2c94f5742f76cb3d12ec993400a3695d413

Know you can comprobate that the publickeys of 7fffffffffffffffffffffffffffffff5d576e7357a4501ddfe92f46681b20a1 and 7fffffffffffffffffffffffffffffff5d576e7357a4501ddfe92f46681b20a2 are

0200000000000000000000003b78ce563f89a0ed9414f5aa28ad0d96d6795f9c63 02c62c910e502cb615a27c58512b6cc2c94f5742f76cb3d12ec993400a3695d413

can you calcualte what is the publickey of 7fffffffffffffffffffffffffffffff5d576e7357a4501ddfe92f46681b20a0 with keymath?

./keymath 0200000000000000000000003b78ce563f89a0ed9414f5aa28ad0d96d6795f9c63 - 1

output: Result: 0300000000000000000000003b78ce563f89a0ed9414f5aa28ad0d96d6795f9c63