Private key

Q: How deeply does Data Pipelines with Apache Airflow, Second Edition cover private key?

Explains asymmetric encryption and HTTPS configuration, then stops short of detailed MITM mechanics and certificate internals.

As explained in Data Pipelines with Apache Airflow, Second Edition

A private key is a secret cryptographic key used to decrypt data or create digital signatures.

A private key is a secret cryptographic key used with a public key in asymmetric encryption. In HTTPS, the web server keeps it secret and uses it to decrypt data protected with the public key. section 16.4.1

When securing an Airflow API server, treat the private key as follows:

Store it in a path available to Airflow, separately from the certificate that can be shared. section 16.4.2
Configure it with AIRFLOW__API__SSL_KEY=/path/to/privatekey.pem and configure the certificate with AIRFLOW__API__SSL_CERT. section 16.4.2
Never share it or leave it exposed: only the private key can decrypt data encrypted with the corresponding public key. section 16.4.1 section 16.4.2

Creating a local HTTPS key

Generate a self-signed key and certificate with OpenSSL, writing the private key to privatekey.pem and the certificate to certificate.pem. Configure both files for Airflow, then access the API server at https://localhost:8080. Because a self-signed certificate is untrusted by default, the browser may warn until it is added to trusted certificates.

How Data Pipelines with Apache Airflow, Second Edition covers it

Cover of Data Pipelines with Apache Airflow, Second Edition

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Also explained in

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Hacking CryptographyA private key is the secret member of an asymmetric key pair used for operations such as decryption or signature generation.
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Software Security for DevelopersA private key is the confidential member of a cryptographic key pair used for operations such as decryption or digital signing.
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Real-World CryptographyA private key is the secret value in a public-key cryptographic key pair used for decryption or other private-key operations.
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Secure APIsA private key is the secret half of an asymmetric cryptographic key pair used to create digital signatures or perform private-key operations.
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Elliptic Curve Cryptography for DevelopersThe secret key in an asymmetric cryptographic key pair that is controlled by its owner and used for signing or decryption operations.
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Road to KubernetesAn SSH private key is the secret member of a cryptographic key pair used to authenticate secure shell connections.
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ASP.NET Core in Action, 3eA private key is a cryptographic key kept secret by its owner and used with a corresponding public key for decryption or signing.
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Acing the Certified Kubernetes Administrator Exam, Second EditionA private key is the secret cryptographic key used by an identity to prove possession of a public-key credential.
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API Design PatternsA private key is the confidential component of an asymmetric cryptographic key pair used to generate digital signatures or perform other private-key operations.
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Grokking Web Application SecurityA private key is a cryptographic key kept secret and used by its owner for operations such as decryption or digital signing.
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Investing for ProgrammersA private key is a secret cryptographic value used to sign cryptocurrency transactions and establish control over associated assets.
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Rust Servers, Services, and AppsA private key is the secret member of a cryptographic key pair used to authenticate its holder or perform private-key cryptographic operations.

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Related concepts

digital signatureproduces · A digital signature is cryptographic data generated with a private key and verified with corresponding public information to authenticate data or its signer and detect alteration.
public-private key pairpart of · A public-private key pair is a mathematically related public key and private key used together for asymmetric cryptographic operations.
ECDSAused by · ECDSA is a public-key digital signature algorithm that uses elliptic-curve arithmetic to generate and verify signatures.
RSAused by · RSA is a public-key cryptosystem based on the computational difficulty of factoring large composite integers and supporting encryption and digital signatures.
SSHused by · SSH is a cryptographic network protocol providing authenticated and encrypted remote access, command execution, and data transfer over untrusted networks.
TLS terminationused by · TLS termination is the process of ending a TLS connection and decrypting its traffic at an endpoint or intermediary for processing or forwarding.

This explainer was generated by Manning's knowledge graph from the text of Data Pipelines with Apache Airflow, Second Edition. The section links point to the parts of the book it draws on.