Amro El-Wakil
Marketer & Web Developer
Cryptography
Intro
Financial services and fintech products live or die on how seriously they handle security — and that's the environment I've built in as Global Head of Development at a DIFC-regulated financial group. Cryptography and blockchain aren't buzzwords in that context; they're the difference between a platform clients trust with their money and one that isn't compliant enough to launch.

What this covers:

Secure data handling and encryption for platforms managing sensitive financial or personal information.
Blockchain integration where it solves a real problem — transparent transaction records, decentralized verification — rather than being added for marketing purposes.
Building with regulatory and compliance requirements in mind from the architecture stage, not retrofitted after an audit flags a gap.

I've built a Crypto Financial System that includes ledger, accounts & wallets management, transaction management & monitoring (transfer of coins through bitcoin, ethereum and tron) for a DIFC company in 2024.
Techniques Available
Encryption
encryption is the process of encoding information. This process converts the original representation of the information, known as plaintext, into an alternative form known as ciphertext. Ideally, only authorized parties can decipher a ciphertext back to plaintext and access the original information. Encryption does not itself prevent interference but denies the intelligible content to a would-be interceptor. Wikipadia
Blockchains
is a growing list of records, called blocks, that are linked together using cryptography. Each block contains a cryptographic hash of the previous block, a timestamp, and transaction data (generally represented as a Merkle tree). The timestamp proves that the transaction data existed when the block was published to get into its hash. As blocks each contain information about the block previous to it, they form a chain, with each additional block reinforcing the ones before it. Therefore, blockchains are resistant to modification of their data because once recorded, the data in any given block cannot be altered retroactively without altering all subsequent blocks. Wikipedia
Tokens
is the process of substituting a sensitive data element with a non-sensitive equivalent, referred to as a token, that has no extrinsic or exploitable meaning or value. The token is a reference (i.e. identifier) that maps back to the sensitive data through a tokenization system. The mapping from original data to a token uses methods that render tokens infeasible to reverse in the absence of the tokenization system, for example using tokens created from random numbers. The tokenization system must be secured and validated using security best practices[4] applicable to sensitive data protection, secure storage, audit, authentication and authorization. The tokenization system provides data processing applications with the authority and interfaces to request tokens, or detokenize back to sensitive data. Tokens could fungible or non-fungible. Wikipedia
How can I help you,
  • Encryption
  • Blockchains
  • Tokens