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A quickstart moves fast, is willing to improvise, shakes things up with innovation and likes to experiment to see what will happen. Tackling problems as a quickstart is a calling card for most visionaries….but if you move REALLY fast...it can intimidate and frustrate your team. In today’s episode, I’m going to share my advice for how to lead a team well as a quickstart leader. In today’s episode you’ll hear: - Common points of FRUSTRATION between quickstart leaders and their less adaptive team - How hiring with radical TRANSPARENCY can enable people to self-select out before it’s too late - The brain science that VALIDATES why some people don’t work the same as others (ever heard of “conative strength?”) - How tools like Kolbe A™ to A™ assessments can IMPROVE communication, reduce tension and ALIGN interests for a quickstart and your team. Subscribe and ReviewHave you subscribed to my podcast? If the answer is no, I’d love for you to subscribe. Diary of a Doer is full of stories of business, some behind the scenes, and freaking amazing guests. If you’re feeling really generous, I’d love for you to give me a review over on Apple Podcasts. Simply select “Ratings and Reviews” and “Write a Review” then a quick line with your favorite part of the episode. It only takes a second and it helps me out a ton!
- LOOKING BACK TO LOOK FORWARD -v. 14-21--- - Peter quotes Joel. Reminds us that all-- scripture points to Jesus and his work-- - -Last days- - all time after Jesus' death-- and resurrection-- - Context - -The Day of the Lord--- - Peter uses Joel's message of Judgment to-- establish need for repentance----- THE RESURRECTION -v. 22-28--- - Validates testimony of Jesus, appealing to-- his might works, miracles, prophecy-- - Peter continually uses scripture -Psalm 16--- to validate message of Jesus----- THE LORD AND CHRIST -v. 29-36--- - We know David spoke not of himself but of-- Jesus in the Psalms from Psalm 132-11-- - Christ said all scripture -Old Testament--- spoke about him -Luke 24------ EFFECT OF PENTECOST SERMON -v. 37-41--- - Holy Spirit convicts hearts-- - If convicted - repent and be baptized-- - 3,000 persons were saved
Have you told yourself you don’t have time for blog posts, but you desire more students, and a greater presence in the community for your studio? If there’s one thing I have learnt, is that there is no point of having a gorgeous website if you are not posting or making updates on it! Today I speak about the 5 ways blog posts are an inexpensive way to drive traffic to your website, enhance your SEO, plus attract more of your dream clients. This altering of your perspective when it comes to blog posts on your website, will be a huge game changer, or a deal breaker with the online presence of your business, which may determine your in-studio success. What are the 5 reasons why regular blog posts can help your business? SEO: Search Engine Optimization Google: showing up on the first page when searched Using purposeful keywords will increase your ranking. Communicating your values & mission + goals. Attracting more clients you’ll love & turn off those you won’t. Showing the culture of the studio. Establish yourself as an industry leader, in your niche in your community. Prospects will be reading your content and gain value. Attracting teacher who align with your vision. Opportunities for sharing and networking. Free marketing Validates you as a credible business. Developing & strengthen relationships with current + past families. Allows you to show your personal side. Creates more connection with your brand. Already worrying about how or what posts to make with your busy schedule? Fear not friends! In next week's episode of the Benefits of Blogging Series (episode 004) I discuss 10 ways to create consistent blog content without you even having to write a thing! Yes, that’s right. There are so many ways to get content written these days it’s insane! Stay tuned for next week’s episode and prepare to have your mind blown! For more Business Of Dance please, like us on Facebook and follow us on Instagram @businessofdance. If you have any questions, topic suggestions or wish to be a guest on the podcast please contact us at podcast@businessofdance.net. On the go, or don’t have time to listen? Download my FREE how to guide: Rock Your BOD: Outlining the Top 5 importances of creating blog posts for your website in detail, including useful tips! Get the FREE download at businessofdance.net/ep3 Hosted By: Claire O'Shea
○ Digital Signatures § Goal: verify Authenticity of a message. § Based on Asymmetric Cryptography. § Basic operations 1. Public / Private keys generation (using some algorithm like RSA) 2. Signing algorithm using the private key 3. Signature verification algorithm using the corresponding public key i. Extending previous Example • Steps (Order is very important, bold stuff is the difference added to authenticate sender) ® Party 1 (Alice) 1. Generates a random AES Session Key (32 bytes / 256 bits) 2. Generates a random Initialization Vector (IV) (16 bytes / 128 bits) 3. Encrypt the message to be sent using the AES Session Key & IV 4. Calculate an HMAC of the encrypted message using the AES Session key 5. Encrypt the AES Session Key using the Public Key of Party 2 (Bob) The recipient. 6. Calculate Signature using the private signing key on the HMAC 7. Sends a packet of (Encrypted Message, Encrypted Session Key, Initialization Vector, HMAC, and Signature) to Bob ® Party 2 (Bob) 1. Decrypts Session key using his Private Key 2. Recalculates the HMAC of the encrypted message (Validates message integrity) } If HMAC check pass – Verify digital signature using Alice Public Key w If signature verification pass w Decrypts the message using the decrypted AES Session Key and Initialization Vector w Otherwise, identity of the sender couldn't not be verified, reject message. } Otherwise, rejects the message because of integrity check failure. • Why Order matters? ® Timing Side-Channel Attacks ® Padding-Oracle Attack ○ Protocols § TLS/SSL • How TLS/SSL Works? • Mitigates against ® Man in the Middle Attacks ® Authentication, so the client can be sure it is talking to the correct destination. § Public Key Infrastructure (PKI) • Certificates aka X.509 Certificate (Sha-1 Signature Issues) ® A digitally signed file ® Identifies (Computer / User / Device) ® Has Public & Private Key, only the certificate owner has the Private Key. ® Has Expiration date ® Information about the CA that issued the cert ® X.509 Extension Attributes (like Usage attribute) ® Revocation Information. • Certificate Authority (CA) (CNNIC, WoSign) ® Issues, signs and manages certificates. ® Famous certificate authorities (Verisign, GoDaddy, … etc). • Trust Chains ® CA's can delegate the signing job to subordinate CA's ◊ Root CA's signs an intermediate signing certificate to the subordinate CA ® The subordinate CA can then issue certificates ® To validate a certificate, the client validates the signatures of all the intermediate stages and make sure all of them are linked to a Trusted CA • Certificate Revocation Lists (CRL's) ® When a certificate is compromised (Private Key leaked) it will be published on the CRL, so each time the cert is validated, the CRL list is checked in case cert is revoked. 3. Takeaways 4. Books a. Understanding Cryptography: A Textbook for Students and Practitionershttps://www.amazon.com/Understanding-Cryptography-Textbook-Students-Practitioners/dp/3642041000 Our facebook Page http://facebook.com/askdeveloper On Sound Cloud http://soundcloud.com/askdeveloper Please Like & Subscribe
الحلقة السابقة https://soundcloud.com/askdeveloper/ep46-askdeveloper-podcast-cryptography-part-1-introduction-and-hashing ○ Encryption (Two Ways) § Symmetric Encryption □ Same key both encrypts and decrypts the data. □ Very fast, yet exchanging key is tricky □ Very Algorithmic □ Examples ® DES Data Encryption Standard (BROKEN) ◊ Uses key of 56 bit length ® Triple DES (3DES) ◊ Uses three keys (or two unique keys) of 56 bit each ® AES Advanced Encryption Standard ◊ Uses keys of 128, 192 or 256 bits long □ Attacks ® Brute force ◊ Usually mitigated via increasing key length, as difficulty increases exponentially as key size increases, for example time to crack given a modern super computer. Key Size Time To Crack 56 bits 399 seconds 128 bits 1.02 * 1018 years 192 bits 1.87 * 1037 years 256 bits 3.31 * 1056 years ◊ Side-Channel Attacks § Asymmetric Encryption □ Key pairs have mathematical relationship □ Each one can decrypt messages encrypted by the other. □ Slow, but exchanging key is trivial □ Very Mathematical □ Anyone can know the Public Key ® The Public key can only be used to encrypt data □ The Private key is kept secret, and never leaves the recipient's side. ® The Private key can only be used to decrypt data □ Examples ® RSA (Rivest, Shamir and Adelman) ® The de-facto standard in the industry ® Public and Private keys are based on large Prime Numbers § Hybrid Encryption □ Uses both Symmetric and Asymmetric encryption at the same time. □ Goals: ® Use the performance of Symmetric Crypto ® Convenience of sharing keys using Asymmetric Crypto ® HMAC for authentication. □ Steps: (Order is very important) ® Party 1 (Alice) 1. Generates a random AES Session Key (32 bytes / 256 bits) 2. Generates a random Initialization Vector (IV) (16 bytes / 128 bits) 3. Encrypt the message to be sent using the AES Session Key & IV 4. Calculate an HMAC of the encrypted message using the AES Session key 5. Encrypt the AES Session Key using the Public Key of Party 2 (Bob) The recipient. 6. Sends a packet of (Encrypted Message, Encrypted Session Key, Initialization Vector, and HMAC) to Bob ® Party 2 (Bob) 1. Decrypts Session key using his Private Key 2. Recalculates the HMAC of the encrypted message (Validates message integrity) } If HMAC check pass – Decrypts the message using the decrypted AES Session Key and Initialization Vector } Otherwise, rejects the message because of integrity check failure. Our facebook Page http://facebook.com/askdeveloper On Sound Cloud http://soundcloud.com/askdeveloper Please Like & Subscribe