ECC Encryption / Decryption

[Sanath Prasanna]

Hi Jesper,
Sorry for trouble you.. Tx for your guidance far.
Br,
Robert..

On Wed, May 12, 2021 at 5:13 PM Jesper Louis Andersen <
jesper.louis.andersen@REDACTED> wrote:

> I'm not your Oracle.
>
> On Wed, May 12, 2021 at 1:07 PM Sanath Prasanna <ahe.sanath@REDACTED>
> wrote:
>
>> Jesper, any comment regarding my problem ?
>> Br,
>> Robert
>>
>> On Fri, May 7, 2021 at 8:39 AM Sanath Prasanna <ahe.sanath@REDACTED>
>> wrote:
>>
>>> Tx Jsesper for your guidance. But still I cannot do that & error came
>>> for below line
>>> EncryptMsg = crypto:private_encrypt(rsa, Msg, ECPrivateKey,
>>> rsa_no_padding),
>>> here attached sample file.
>>>
>>> On Wed, May 5, 2021 at 7:39 PM Jesper Louis Andersen <
>>> jesper.louis.andersen@REDACTED> wrote:
>>>
>>>> One particular problem is that `public_key:encrypt_private` is the RSA
>>>> algorithm, and not ECC. You need `crypto:private_encrypt/4` if you want to
>>>> do ECC.
>>>>
>>>> On Wed, May 5, 2021 at 4:38 AM Sanath Prasanna <ahe.sanath@REDACTED>
>>>> wrote:
>>>>
>>>>> Tx Jesper for your kind response.  Here attached my sample test file
>>>>> &  following one is not working. That is the expected other Encoding
>>>>> scheme. (ShaXxxx)
>>>>> EncryptMsg = public_key:encrypt_private(Msg, ECPublicKey), (line 64)
>>>>> Can you give some guide to over come this ?
>>>>> br,
>>>>> Robert
>>>>>
>>>>> On Tue, May 4, 2021 at 8:48 PM Jesper Louis Andersen <
>>>>> jesper.louis.andersen@REDACTED> wrote:
>>>>>
>>>>>> On Sun, May 2, 2021 at 1:33 PM Sanath Prasanna <ahe.sanath@REDACTED>
>>>>>> wrote:
>>>>>>
>>>>>>> Hi,
>>>>>>> I want to encrypt a text message using ECC & need to decrypt. Can
>>>>>>> someone give me a sample for that process ?
>>>>>>>
>>>>>>
>>>>>> You will probably have to give more information.
>>>>>>
>>>>>> There are several different types of ECC methods, and inside these,
>>>>>> there are a couple of different elliptic curves you can choose from, and
>>>>>> some of them are standardized requirements for certain applications.
>>>>>>
>>>>>> Furthermore, ECC is often used as a tool in a larger toolbox. It's
>>>>>> used to agree on a (shared) secret key for an underlying block or stream
>>>>>> cipher, and in some situations also for agreeing on message authentication
>>>>>> (which protects the message integrity against tampering).
>>>>>> Getting this toolbox / tooling construction wrong can result in the
>>>>>> proposed solution being insecure, so beware.
>>>>>>
>>>>>>
>>>>>> --
>>>>>> J.
>>>>>>
>>>>>
>>>>
>>>> --
>>>> J.
>>>>
>>>
>
> --
> J.
>
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